N.D. Admin. Code Title 62 — Plumbing, Board of

Article 62-01 General Administration

Chapter 62-01-01 Organization of Board

N.D. Admin. Code 62-01-01-01 Organization of board of plumbing

1.History. The 1941 legislative assembly passed a state plumbing law, codified as North Dakota Century Code chapter 43-18. The chapter was intended to promote and protect the public health through the regulation of the business of plumbing by creating a state board of plumbing and empowering the board and the department of environmental quality to adopt rules governing the practice of plumbing and establishing a code of minimum standards of plumbing work. The 1973 legislative assembly passed legislation, codified as North Dakota Century Code chapter 43-18.1, which regulates the installation of water-conditioning equipment. The 1987 legislative assembly passed legislation, codified as North Dakota Century Code chapter 43-18.2, which regulates the installation of sewer and water services.

2.Board membership. The board of plumbing consists of the chief sanitary engineer of the department of environmental quality, and four persons appointed by the governor: one a master plumber; one a journeyman plumber; one a registered professional engineer; and one a representative of the consuming public. The four appointed members of the board serve four-year terms, with one term expiring each year.

3.Secretary and executive director. The secretary and executive director of the board is appointed by the board and is responsible for administration of the board's activities.

4.Inquiries. All inquiries and communication relating to licensing, plumbing installation, and inspections may be directed to:

North Dakota State Plumbing Board 1110 College Drive, Suite 210 Bismarck, ND 58501 Phone (701) 328-9977 Fax (701) 328-9979 E-mail ndplumb@nd.gov

April 1, 2010; July 1, 2022.

History

• History: Amended effective November 1, 1981; September 1, 1987; April 1, 1994; March 1, 2000;
• General Authority: NDCC 28-32-02, 43-18-08
• Law Implemented: NDCC 43-18-06

Article 62-02 Licensure

Chapter 62-02-01 Plumber Licensure

N.D. Admin. Code 62-02-01-01 Application for journeyman or master plumber license

No applicant shall be entitled to take the examination for either the master or journeyman plumber's certificate and license unless and until the applicant furnishes to the board satisfactory evidence that the applicant possesses sufficient practical experience to enable the applicant to perform satisfactorily the duties of the classification for which the applicant has made application. The application fee is fifty dollars.

1.Applicants for a journeyman plumber's examination and license shall have had four years' experience as an apprentice plumber under a licensed master plumber. Applicants who are working at the plumbing trade in localities where state licenses are not required, who have had five years of experience (one thousand nine hundred hours per year and a total of nine thousand five hundred hours) and who furnish four affidavits verifying years of experience, may make application for a journeyman examination screening test. The screening test is defined as an oral and written test given by the state plumbing board and a plumbing inspection report, signed by a state plumbing inspector, of an installation installed by the applicant to determine the applicant's qualifications for writing the journeyman examination.

The journeyman license fee is one hundred dollars.

2.Applicants who are journeyman plumbers in other states who desire to work in this state in localities where a state journeyman license is required may make application for a journeyman examination and license. Proof of such journeyman license from another state shall be vouched for as provided on the application blank furnished by the North Dakota state plumbing board.

3.All applicants for a master plumber's license must be twenty-one years of age and must have had two years' (three thousand four hundred hours) experience as a journeyman plumber licensed by the state of North Dakota or any other state that has a state licensing law. Proof of such journeyman license from another state shall be vouched for as provided on the application blank furnished by the North Dakota state plumbing board. The master license fee is two hundred dollars.

4.Applicants who are master plumbers in other states who desire to work in this state in localities where a state master license is required may make application for a master examination and license. Proof of such master license from another state shall be vouched for as provided on the application blank furnished by the North Dakota state plumbing board.

5.All applications will expire and be canceled after a period of six months from date of approval if the applicant fails to appear for examination within the six-month period.

An applicant for registration as an apprentice must have reached the age of eighteen years. An apprentice shall serve a term of four years, not less than one thousand nine hundred hours per year, with a total of not less than seven thousand six hundred hours.

1.The board may grant hourly credit toward a term of apprenticeship when the applicant furnishes proof of previous practical experience in the trade, or is a graduate of a course in plumbing at an accredited school having at least a nine month, one thousand twenty hours course in plumbing. The number of hours credit for each hour of the course according to the graduating grade average shall be: A average - two hours, B average - one and three-quarter hours, C average - one and one-half hours, and a D average - one hour. Credit for trade-related experience shall be determined by criteria established by the board.

2.A master plumber employing a registered apprentice shall report to the board any changes made in relation to continued employment of such apprentice. It is the employer's duty and responsibility to not permit an apprentice to perform work unless under the direct supervision and in the immediate presence of either a master or journeyman plumber. There shall not be more than five plumber's apprentices under the immediate and personal supervision of either a master plumber or journeyman plumber employed on any installation, alteration, or repair project.

3.Apprentice plumbers who have had three years (five thousand seven hundred hours) experience in learning and assisting in the installation, alteration, and repair of plumbing, and working for a master plumber, may work during their fourth year of apprenticeship by themselves without being under the direct supervision of a master or journeyman plumber.

History

• History: Amended effective February 1, 1994; July 1, 2022.
• Law Implemented: NDCC 43-18-13, 43-18-13.1 62-02-01-01.1. Application for apprentice plumber - Supervised practice.
• History: Effective February 1, 1994.
• Law Implemented: NDCC 43-18-21

N.D. Admin. Code 62-02-01-02 Examination fee for each examination

An applicant for examination shall be entitled to one examination only for each examination fee paid. The examination fee is fifty dollars.

History

• Law Implemented: NDCC 43-18-13

N.D. Admin. Code 62-02-01-03 Examination subjects and passing grades

Examination for applicants desiring to become registered and licensed plumbers shall consist of: answering questions pertaining to the basic principles of plumbing and the plumbing code; preparing drawings on which the applicant is to draw all stacks, wastes, and vents, and to insert the minimum pipe sizes. The examinations for master and journeyman plumber need not be the same. The passing grade for a master plumber shall be eighty percent, and the journeyman plumber passing grade shall be seventy percent.

History

• Law Implemented: NDCC 43-18-08, 43-18-13

N.D. Admin. Code 62-02-01-04 Reexamination

If an applicant fails to pass an examination, the applicant shall be denied the right to take another examination until at least six months shall have passed from the date of the applicant's last examination.

History

• Law Implemented: NDCC 43-18-13

N.D. Admin. Code 62-02-01-05 Reexamination of apprentice plumber

An apprentice plumber who has written and failed the journeyman examination must rewrite the examination at the end of the six-month period or work under direct supervision of a licensed master or journeyman plumber.

History

• Law Implemented: NDCC 43-18-21

N.D. Admin. Code 62-02-01-06 Master plumber - Renewal of journeyman and master plumber certificate

The holder of a master plumber's certificate and license may renew the holder's journeyman certificate and license upon payment of the journeyman renewal fee and during the same year may reinstate the holder's master plumber's certificate and license upon payment of the difference between the journeyman renewal fee of one hundred dollars and the master renewal fee of two hundred dollars.

History

• Law Implemented: NDCC 43-18-17

N.D. Admin. Code 62-02-01-07 Renewal of expired license

No certificate and license need be renewed by the board later than one year subsequent to its expiration. The board may, in its discretion, require that a holder of a license which has been expired for one year or more submit to a new examination. The late renewal fee is fifty dollars.

History

• Law Implemented: NDCC 43-18-17

N.D. Admin. Code 62-02-01-08 Application for plumbing installation certificate

Repealed effective March 1, 2000.

N.D. Admin. Code 62-02-01-09 Licensed master plumber required

Repealed effective February 1, 1994.

Chapter 62-02-02 Water Conditioning Contractor and Installer Licensure

N.D. Admin. Code 62-02-02-01 Application for water conditioning installer or contractor license

No applicant shall be entitled to take the examination for either the water conditioning contractor or water conditioning installer's certificate and license unless and until the applicant furnishes to the board satisfactory evidence that the applicant possesses sufficient practical experience to enable the applicant to perform satisfactorily the duties of the classification for which the applicant has made application.

1.Applicants for a water conditioning installer's examination and license shall have had one year's experience as an apprentice water conditioning installer under a licensed water conditioning contractor. A one-year term of apprenticeship is defined as not less than one thousand nine hundred hours.

2.Applicants who are water conditioning installers in other states who desire to work in this state in localities where a state water conditioning installer's license is required may make application for a water conditioning installer's examination and license. Proof of such water conditioning installer's license from another state shall be vouched for as provided on the application blank furnished by the plumbing board.

3.Graduates of the plumbing course of an accredited trade school having at least a nine-month (one thousand twenty hours) course in plumbing shall be eligible to make application for a water conditioning installer's examination and license.

4.All applicants for a water conditioning contractor's license must be twenty-one years of age and must have had one year's (one thousand nine hundred hours) experience as a water conditioning installer licensed by the state of North Dakota or any other state that has a state licensing law. Proof of such water conditioning installer's license from another state shall be vouched for as provided on the application blank furnished by the plumbing board.

5.Applicants who are water conditioning contractors in other states who desire to work in this state in localities where a state water conditioning contractor's license is required may make application for a water conditioning contractor's examination and license. Proof of such water conditioning contractor's license from another state shall be vouched for as provided on the application blank furnished by the plumbing board.

6.All applications will expire and be canceled after a period of six months from date of approval if the applicant fails to appear for examination within the six-month period.

History

• History: Amended effective October 1, 1989.

N.D. Admin. Code 62-02-02-02 Examination fee for each examination

An applicant for examination shall be entitled to one examination only for each examination fee paid.

N.D. Admin. Code 62-02-02-03 Examination subjects and passing grades

Examination for applicants desiring to become registered and licensed water conditioning contractors or water conditioning installers shall consist of answering questions pertaining to the basic principles of the code and questions which are based upon the code. The questions for water conditioning contractors and water conditioning installers need not be the same. The passing grade for a water conditioning contractor shall be eighty percent, and the water conditioning installer passing grade shall be seventy percent.

N.D. Admin. Code 62-02-02-04 Reexamination

If an applicant failed to pass an examination, the applicant shall be denied the right to take another examination until at least six months shall have passed from the date of the applicant's last examination.

N.D. Admin. Code 62-02-02-05 Reexamination of apprentice water conditioning installer

An apprentice water conditioning installer who has written and failed the water conditioning installer's examination must rewrite the examination at the end of the six-month period or work under the direct supervision of a licensed water conditioning contractor or water conditioning installer.

N.D. Admin. Code 62-02-02-06 Water conditioning contractor - Renewal of installer and contractor certificate

The holder of a water conditioning contractor's certificate and license may renew the holder's water conditioning installer's certificate and license upon payment of the twenty dollar fee and during the same year may reinstate the holder's water conditioning contractor's certificate and license upon payment of an additional twenty dollars.

History

• Law Implemented: NDCC 43-18.1-06

N.D. Admin. Code 62-02-02-07 Renewal of expired license

No certificate and license need be renewed by the board later than one year subsequent to its expiration. The board may, in its discretion, require that a holder of a license which has been expired for one year or more submit to a new examination.

History

• Law Implemented: NDCC 43-18.1-06

N.D. Admin. Code 62-02-02-08 Issuance of water conditioning installer's certificate and license

The board issues a person a water conditioning installer's certificate and license upon and with the understanding that the holder thereof shall not engage in the business of installing water conditioners unless at all times a registered and licensed water conditioning contractor, who is responsible for the proper installation of the water conditioners, is in charge of such work.

N.D. Admin. Code 62-02-02-09 Report of water conditioning equipment installation

It shall be the duty of water conditioning contractors to report to the plumbing board office all installations of water conditioning equipment in localities that do not enforce a permit and inspection program for the installation of water conditioning equipment.

History

• Law Implemented: NDCC 43-18.1-03

Chapter 62-02-03 Sewer and Water Contractor and Installer Licensure

N.D. Admin. Code 62-02-03-01 Application for sewer and water installer or contractor license

No applicant is entitled to take the examination for either the sewer and water contractor or sewer and water installer's certificate and license unless and until the applicant furnishes to the board proof that the applicant possesses sufficient practical experience to enable the applicant to perform satisfactorily the duties of the classification for which the applicant has made application. If the applicant fails to appear for examination, the application will expire after a period of six months from date of verification of the application. The board will consider the following as sufficient practical experience.

1.A one-year term of practical experience is defined as one thousand seven hundred hours.

2.Graduates of a plumbing course of an accredited trade school having at least a nine-month (one thousand twenty hours) course in plumbing shall satisfy the apprentice requirements and be eligible to make application for a sewer and water installer's examination and license.

3.Apprentice plumbers registered with this state and having two years' experience are eligible to make application for a sewer and water installers examination and license. A one-year term of apprenticeship is defined as not less than one thousand seven hundred hours.

History

• General Authority: NDCC 43-18.2-02(2)
• Law Implemented: NDCC 43-18.2-02(3)

N.D. Admin. Code 62-02-03-02 Examination fee for each examination

An applicant for examination is entitled to one examination only for each examination fee paid.

History

• Law Implemented: NDCC 43-18.2-08

N.D. Admin. Code 62-02-03-03 Reexamination of apprentice sewer and water installer

An apprentice sewer and water installer who has written and failed the sewer and water installer's examination must rewrite the examination at the end of a three-month period. During the three-month period the sewer and water installer apprentice may work under the direct supervision of a licensed sewer and water installer.

History

• Law Implemented: NDCC 43-18.2-04

N.D. Admin. Code 62-02-03-04 Renewal of expired license

Any person may renew his license without examination if renewal occurs within one year following expiration. The board shall require that a holder of a license which has been expired for one year or more submit to a new examination.

N.D. Admin. Code 62-02-03-05 Renewal of sewer and water contractor and installer certificate and license

The holder of a sewer and water contractor's certificate and license may renew the sewer and water installer's certificate and license upon payment of the installer's renewal fee and during the same year may reinstate the holder's contractor's certificate and license upon payment of the difference between the installer and contractor renewal fee.

History

• History: Effective January 1, 1992.

N.D. Admin. Code 62-02-03-06 License renewal

A certificate and license issued under the provisions of this chapter is valid for not more than one year, beginning the first day of July and expiring on the thirtieth day of June of the following year.

History

• History: Effective February 1, 1996.

Article 62-03.1 Plumbing Installation Standards

Chapter 62-03.1-01 Administration

N.D. Admin. Code 62-03.1-01 Administration

ARTICLE 62-03.1

PLUMBING INSTALLATION STANDARDS

Chapter 62-03.1-01Administration 62-03.1-02General Regulations 62-03.1-03Private Sewage Disposal Systems

CHAPTER 62-03.1-01

ADMINISTRATION

Section 62-03.1-01-01Conformance With the North Dakota Plumbing Code 62-03.1-01-02General Statement of Policy 62-03.1-01-03Interpretive Rules [Repealed] 62-03.1-01-04Administrative Powers and Duties 62-03.1-01-05Application for Plumbing Installation Certificate 62-03.1-01-01. Conformance with the North Dakota Plumbing Code.

1.State plumbing code defined. The board adopts, as the state plumbing code, the 2018 edition of the Uniform Plumbing Code published by the international association of plumbing and mechanical officials (IAPMO), to be known as the 2018 North Dakota Plumbing Code, including chapters 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, and 17; appendices A, B, C, D, E, I, and M; and

chapter 62-03.1-03.

2.All plumbing as defined in North Dakota Century Code section 43-18-01, including materials, must meet or exceed the minimum provisions of this article and the North Dakota Plumbing Code.

History: Effective March 1, 2000; amended effective April 1, 2010; April 1, 2020.

General Authority: NDCC 43-18-09

Law Implemented: NDCC 43-18-09 62-03.1-01-02. General statement of policy.

The scope of this code excludes the development of specific standards related to any, all, or any combination of the composition, dimensions, or mechanical and physical properties of materials, fixtures, devices, and equipment used or installed in plumbing systems. The inclusion of a material, even though indicated as approved for purposes of the code, does not infer unqualified endorsement as to its selection of serviceability in any or every installation. The establishment of trade jurisdictional areas is not within the scope of this code.

History: Effective March 1, 2000.

General Authority: NDCC 43-18-09

Law Implemented: NDCC 43-18-09 62-03.1-01-03. Interpretive rules.

Repealed effective April 1, 2010. 62-03.1-01-04. Administrative powers and duties.

The executive director and inspectors of the North Dakota state plumbing board, under the direction of the board, shall administer laws, rules, plumbing installation standards of this state, and the North Dakota Plumbing Code. In all cases when any action is taken by the executive director or inspectors of the board to enforce the provisions of any sections contained in this article or the North Dakota Plumbing Code, such acts must be done in the name of and on behalf of the state.

History: Effective March 1, 2000; amended effective April 1, 2020; July 1, 2022.

General Authority: NDCC 28-32-02, 43-18-08, 43-18-09

Law Implemented: NDCC 43-18-06, 43-18-08, 43-18-09 62-03.1-01-05. Application for plumbing installation certificate.

Any plumbing installation requiring inspection must have a plumbing installation certificate properly executed by the master or journeyman plumber in charge of the installation. The board shall have paper or electronic certificates for the person in charge of the installation.

1.Inspection fees for each certificate issued must be according to the schedule of fees shown on the plumbing installation certificate. If work has commenced prior to submittal of the certificate and proper fees, the fee will be double or actual cost incurred to investigate, whichever is less.

Requested inspection, reinspection, or inspection for which no fee is specifically indicated must be charged at fifty dollars per hour, plus travel expense.

2.Paper certificates must be signed by the applicant and the original returned to the board along with the proper fees prior to commencement of work. The duplicate copy must be retained by the plumbing contractor and the triplicate copy must be submitted to the building owner.

Electronic certificates are processed online. The issuing certificate fee must be charged for each certificate that must be reissued.

History: Effective March 1, 2000; amended effective April 1, 2010; April 1, 2020.

General Authority: NDCC 43-18-08

Law Implemented: NDCC 43-18-17.2, 43-18-17.3

Chapter 62-03.1-02 General Regulations

N.D. Admin. Code 62-03.1-02 General Regulations

CHAPTER 62-03.1-02

GENERAL REGULATIONS

Section 62-03.1-02-01Conformance With Other Regulations 62-03.1-02-02Uniform Plumbing Code - Exceptions and Modifications [Repealed] 62-03.1-02-01. Conformance with other regulations.

Nothing in this article may be construed to prevent the application of local ordinances or other legal requirements.

History: Effective March 1, 2000.

General Authority: NDCC 43-18-09

Law Implemented: NDCC 43-18-09 62-03.1-02-02. Uniform Plumbing Code - Exceptions and modifications.

Repealed effective April 1, 2020.

Chapter 62-03.1-03 Private Sewage Disposal Systems

N.D. Admin. Code 62-03.1-03 Private Sewage Disposal Systems

CHAPTER 62-03.1-03

PRIVATE SEWAGE DISPOSAL SYSTEMS

Section 62-03.1-03-01General Provisions 62-03.1-03-02Installation - Excavator and Installer Requirements 62-03.1-03-03Design of Individual Sewage System 62-03.1-03-04Location of Sewage System 62-03.1-03-05Percolation Tests 62-03.1-03-06Soil Borings 62-03.1-03-07Septic Tanks 62-03.1-03-08Distribution Box 62-03.1-03-09Absorption Trenches 62-03.1-03-10Piping Material 62-03.1-03-11Pumps and Pump Systems 62-03.1-03-12Alternative Systems 62-03.1-03-13Chemical Toilets 62-03.1-03-14Privies 62-03.1-03-15Septic Tank Pumpers 62-03.1-03-01. General provisions.

1.All sewage treatment systems shall be constructed, added to, or altered in accordance with this chapter. When a public or noncommunity sewerage system is deemed available to a premise used for human occupancy if such premise is within two hundred feet [60.96 meters], the approving authority shall require that sewage be discharged into that system.

2.Where public or noncommunity sewage treatment systems are not available and construction of an individual sewage treatment system is contemplated for a building of human occupancy or use or addition to, or alteration of any existing sewage treatment system, the master plumber or sewer and water contractor, or septic system installer, previous to beginning any construction may be required to make application to the local or district health units for a written permit to make the desired installation.

3."Sewage treatment" under this section means all private methods of collecting and disposing of domestic sewage including septic tanks, privies, chemical toilets, and any others.

4.All domestic sewage shall be disposed of by an approved method of collection, treatment, and effluent discharge. Domestic sewage or sewage effluent shall not be disposed of in any manner that will cause pollution of the ground surface, ground water, bathing area, lake, pond, watercourse, or create a nuisance. It shall not be discharged into any abandoned or unused well, or into any crevice, sink hole, or other opening either natural or artificial in a rock formation.

5.Where water under pressure is not available, all human body wastes shall be disposed of by depositing them in approved privies, chemical toilets, or such other installations acceptable to the administrative authority.

6.Water-carried sewage from bathrooms, kitchens, laundry fixtures, and other household plumbing shall pass through a septic or other approved sedimentation tank prior to its discharge into the soil or into an alternative system. Where underground disposal for treatment is not feasible, consideration will be given to special methods of collection and disposal.

7.The building contractor, owner, plumbing contractor, or disposal system installer are jointly responsible for compliance with this chapter.

8.Abandoned disposal systems, septic tanks, pumping and other chambers, and seepage beds shall be disconnected from the buildings. The tanks and chambers shall be pumped out and filled with earth.

9.No property shall be improved in excess of its capacity to properly absorb sewage effluent in the quantities and by the means provided in this code.

10.When there is insufficient lot area or improper soil conditions for adequate sewage treatment for the building or land use proposed, and the administrative authority so finds, no building permit shall be issued and no private sewage treatment shall be permitted. Where space or soil conditions are critical, no building permit shall be issued until engineering data and test reports satisfactory to the administrative authority have been submitted and approved or a private sewage treatment system complying with the provisions of this article has first been designed.

11.Nothing contained in this chapter shall be construed to prevent the administrative authority from requiring compliance with higher requirements than those contained herein where such higher requirements are essential to maintain a safe and sanitary condition.

12."Administrative authority" under this section means the North Dakota department of environmental quality, district health units, or county or city health departments that have expertise in onsite sewage treatment systems, or individual official, board, department, or agency established and authorized by a state, county, city, or other political subdivision created by law to administer and enforce the provisions of this chapter.

13."Continuing education" under this section means a structured, professionally presented curriculum dealing with onsite sewage treatment systems sanctioned wholly or in part by the

14."Installer" under this section means an individual or contractor that engages in the construction of onsite sewage treatment systems. Homeowners who work on their own systems are not included in this definition.

15."Mottled soil" under this section means soil from a soil boring which is marked with spots of contrasting colors. Any soil having spots of contrasting colors is considered to be mottled.

16."Sewage treatment" under this section means all private methods of collecting and disposing of domestic sewage including septic tanks, privies, chemical toilets, and any others.

17.A "chamber or pump chamber" under this section means a watertight receptacle for receiving effluent from the septic tank which will be used for placement of an effluent grade pump to distribute that effluent to the treatment area.

18."Noncommunity" under this section means a collector system for sewage disposal serving a group of homes which uses lagoons or other collective methods of disposal and treatment which are not otherwise regulated by the environmental protection agency or state regulations.

History: Effective March 1, 2000; amended effective July 1, 2015. 62-03.1-03-02. Installation - Excavator and installer requirements.

1.Individuals or business contractors may be required by the administrative authority to have or obtain a license or permit to install individual onsite sewage treatment systems as described in this chapter.

2.Where required by administrative authority, installers of septic systems must obtain at least eight contact hours of suitable continuing education every two years which pertains to onsite septic system installation. Reciprocity for training in other states can be made on an individual

basis by the administrative authority.

3.The installer of a treatment system shall submit an "as built" drawing of the system to the administrative authority within thirty days after the system has been completed. 62-03.1-03-03. Design of individual sewage system.

1.Design. The design of the individual sewage treatment system must take into consideration location with respect to wells or other sources of water supply, topography, water table, soil characteristics, area available, and maximum occupancy of the building.

2.Type of system. The type of system to be installed shall be determined on the basis of location, soil permeability, and ground water elevation.

3.Sanitary sewage. The system shall be designed to receive all sanitary sewage, including laundry waste, from the building. Drainage from footings or roofs shall not enter the system.

4.Discharge. The system shall consist of a septic tank discharging into either a subsurface treatment field or one or more seepage beds or into a combination of both, if found adequate as such and approved by the administrative authority.

5.Ground water. No plumbing fixture may be connected to any individual sewage treatment system where ground water may collect above the sewage treatment system causing a flooded condition, unless the elevation of the fixture trap is a sufficient height above the elevation of the finished grade of the ground in which the sewage treatment field is installed to prevent backup. The minimum separation distance from the bottom of the treatment area must equal or exceed twenty-four inches [60.96 centimeters].

6.Alternate design. Where soil conditions are such that neither of the systems mentioned in subsection 4 can be expected to operate satisfactorily, approval of an alternate design shall be secured from the administrative authority.

7.Sewage flow. Design criteria for sewage flow according to the type of establishment is indicated in the following table:

SEWAGE FLOWS ACCORDING TO TYPE OF ESTABLISHMENT _________________________________________________________

Gallons Per Person Per Day Type of Establishment (Unless Otherwise Noted) _________________________________________________________ Airports (per passenger) ............................ 5 Apartments-multiple family (per resident) ........... 60 Assembly halls (per seat) ........................... 2 Bars (per seat) ..................................... 5 Bathhouses and swimming pools ....................... 10 Bowling alleys (per lane) ........................... 75 Camps:

Campground with central comfort stations .......... 35 With flush toilets, no showers .................... 25 Construction camps (semipermanent) ................ 50 Day camps (no meals served) ....................... 15 Resort camps (night and day) with limited plumbing ........................................ 50 Luxury camps ...................................... 100 Churches (per sanctuary seat) ....................... 5 Churches with kitchens (per sanctuary seat) ......... 7 Cottages and small dwellings with seasonal occupancy ......................................... 50 Country clubs (per member present) .................. 25 Dwellings:

Boardinghouses .................................... 50 Additional for nonresident boarders ............. 10 Luxury residences and estates ..................... 150 Multiple family dwellings (apartments) ............ 60 Roominghouses ..................................... 40 Single-family dwellings ........................... 75 Factories (gallons per person, per shift, exclusive of industrial wastes) ................................ 35 Hospitals (per bed space) ........................... 250 Hotels (per guest) .................................. 50 Institutions other than hospitals (per bed space) ... 100 Laundries, self-service (gallons per machine) ....... 500 Mobile home parks (per space) ....................... 250 Motels (per bed space) .............................. 50 Picnic parks (sanitary waste only) .................. 5 Picnic parks with bathhouses, showers, and flush toilets ................................. 10 Restaurants (toilet and kitchen wastes per patron) .. 10 Restaurants (kitchen wastes per meal served) ........ 3 Restaurants additional for bars and cocktail lounges .................................. 2 Schools:

Boarding .......................................... 75 Day, without gyms, cafeterias, or showers ......... 15 Day, with gyms, cafeteria, and showers ............ 25 Day, with cafeteria, but without gyms or showers ...................................... 20 Service stations (per vehicle served) ............... 10 Theaters:

Movie (per auditorium seat) ....................... 5 Drive-in (per car space) .......................... 5 Travel trailer parks without individual water and sewer hookups (per space) ......................... 50 Travel trailer parks with individual water and sewer hookups (per space) ......................... 100 Workers:

Construction (at semipermanent camps) ............. 50 Day, at school and offices (per shift) ............ 15 62-03.1-03-04. Location of sewage system.

1.The minimum lot size in which a private treatment system may be installed is forty thousand square feet [3716.00 square meters]. Smaller lot sizes may be approved by the administrative

authority if a centralized sewage treatment system is provided or the soil conditions present throughout the lot are such that a second treatment area is able to be installed in the lot.

2.The following table provides for the minimum distances that shall be observed in locating the various components of the treatment system:

Well <100'Well >100'Distribution Device Treatment AreaProperty LinesBuilding Building Sewer10050---- Septic Tank100505101010 Distribution Device 10050--1020 Treatment Area100505-1010 Well <100'--100100n/an/a Well >100'--5050n/an/a Water line (pressure) --1010n/an/a Water line (suction) --5050n/an/a Surface water bodies n/an/a100100n/an/a

3.All proposed sites for individual sewage treatment systems must be evaluated as to:

a.Depth to the highest known or calculated ground water table or bedrock;

b.Soil conditions, properties, and permeability;

c.Slope;

d.The existence of lowlands, local surface depressions, and rock outcrops;

e.All legal setback requirements from existing and proposed buildings, propertylines, sewage tanks, soil treatment systems, water supply wells, buried water pipes and utility lines, the ordinary high water mark of lakes, rivers, streams, flowages, and the location of all soil treatment systems and water supply wells on adjoining lots to the proposed soil treatment system, sewage tank, and water supply well; and

f.Surface water flooding probability.

4.Privies, septic tanks, and underground treatment means shall not be within two hundred feet [60.96 meters] measured horizontally from the high water level in the reservoir or the banks of tributary streams when situated less than three thousand feet [914.4 meters] upstream from potable water intake structures. Sewage treatment facilities situated beyond three thousand feet [914.4 meters] upstream from intake structures shall be located no less than one hundred feet [30.48 meters] measured horizontally from the high water level in the reservoir or the banks of the tributary streams. 62-03.1-03-05. Percolation tests.

When percolation tests are required, they must be made as follows:

1.Test hole dimensions and locations. Each test hole must be six inches [15.24 centimeters] in diameter, have vertical sides, and be bored or dug to the depth of the bottom of the proposed individual sewage treatment system. Soil texture descriptions must be recorded noting depths where texture changes occur.

2.Preparation of the test hole. The bottom and sides of the hole must be carefully scratched to remove any smearing and to provide a natural soil surface into which water may penetrate.

All loose material must be removed from the bottom of the test hole and two inches [5.08 centimeters] of one-fourth-inch to three-fourths-inch [.635-centimeter to 1.90-centimeter] gravel must be added to protect the bottom from scouring.

3.Soil saturation and swelling. The hole must be carefully filled with clear water to a minimum depth of twelve inches [30.48 centimeters] over the soil at the bottom of the test hole and maintained for no less than four hours. The soil must then be allowed to swell for at least sixteen, but no more than thirty hours. In sandy soils, the saturation and swelling procedure is not required and the test may proceed if one filling of the hole has seeped away in less than ten minutes.

4.Percolation rate measurement.

a.In sandy soils. Adjust the water depth to eight inches [20.32 centimeters] over the soil at the bottom of the test hole. From a fixed reference point, the drop in water level must be measured in inches [centimeters] to the nearest one-eighth inch [.34 centimeter] at approximately ten-minute intervals. A measurement can also be made by determining the time it takes for the water level to drop one inch [2.54 centimeters] from an eight-inch [20.32-centimeter] reference point. If eight inches [20.32 centimeters] of water seeps away in less than ten minutes, a shorter interval between measurements must be used, but in no case may the water depth exceed eight inches [20.32 centimeters]. The test must continue until three consecutive percolation rate measurements vary by a range of no more than ten percent.

b.In other soils. Adjust the water depth to eight inches [20.32 centimeters] over the soil at the bottom of the test hole. From a fixed reference point, the drop in water level must be measured in inches [centimeters] to the nearest one-eighth inch [.34 centimeter] at approximately thirty-minute intervals, refilling between measurements to maintain an eight-inch [20.32-centimeter] starting head. The test must continue until three consecutive percolation rate measurements vary by a range of no more than ten percent.

The percolation rate can also be made by observing the time it takes the water level to drop one inch [2.54 centimeters] from an eight-inch [20.32-centimeter] reference point if a constant water depth of at least eight inches [20.32 centimeters] has been maintained for at least four hours prior to the measurement.

5.Calculating the percolation rate. Divide the time interval by the drop in water level to obtain the percolation rate in minutes per inch [2.54 centimeters].

Percolation rates determined for each test hole must be averaged to determine the final soil treatment system design.

A percolation test may not be run where frost exists below the depth of the proposed soil treatment system. 62-03.1-03-06. Soil borings.

When soil borings are required, they must be made as follows:

1.Each boring or excavation must be made to a depth at least three feet [0.91 meters] deeper than the bottom of the proposed system or until bedrock or a water table is encountered, whichever is less.

2.A soil texture description must be recorded by depth and notations made where texture changes occur.

3.Particular effort must be made to determine the highest known water table by recording the first occurrence of mottling observed in the hole, or if mottling is not encountered, the open holes in clay or loam soils must be observed after standing undisturbed a minimum of sixteen hours, and depth to standing water, if present, must be measured. 62-03.1-03-07. Septic tanks.

1.Liquid capacity. The liquid capacity of all septic tanks shall conform to the tables contained in subsection 7 of section 62-03.1-03-03 and this subsection as determined by the number of bedrooms or apartment units in dwelling occupancies and the occupant load or the number of plumbing fixture units as determined from table 7-3 of the Uniform Plumbing Code, whichever is greater, in other building occupancies.

CAPACITY OF SEPTIC TANKS*

Single-Family Dwellings - Number of Bedrooms Multiple Dwelling Units or Apartments - One Bedroom Each Other Uses - Maximum Fixture Units Served Minimum Septic Tank Working Capacity in Gallons 1-3201000 42251200 5 or 63331500 7 or 84452000 5552250 6602500 7702750 8803000 9903250 101003500 Extra bedroom, 150 gallons each.

Extra dwelling units over 10, 250 gallons each.

Extra fixture units over 100, 25 gallons per fixture unit. *NOTE: Septic tank sizes in this table include sludge storage capacity and the connection of domestic food waste disposal units without further volume increase

2.Septic tank construction. Septic tanks must be constructed of sound durable materials not subject to excessive corrosion or decay and must be watertight. Each such tank must be structurally designed to withstand all anticipated earth or other loads and must be installed level and on a solid bed. All tanks regardless of material or method of construction must conform to the following criteria:

a.The liquid depth of any septic tank or compartment shall be not less than thirty inches [76.20 centimeters], nor more than six and one-half feet [1.97 meters]. No tank may have an inside horizontal dimension less than twenty-four inches [60.96 centimeters].

b.The space in the tank between the liquid surface and the top of the inlet and outlet baffles must be not less than twenty percent of the total required liquid capacity, except that in horizontal cylindrical tanks this space must be not less than fifteen percent of the total required liquid capacity.

c.There must be at least one inch [2.54 centimeters] between the underside of the top of the tank and the highest point of the inlet and outlet devices. The inlet invert must be not less than three inches [7.62 centimeters] above the outlet invert.

d.Baffles must be integrally cast with the tank, affixed with a permanent waterproof adhesive or affixed with stainless steel connectors, top and bottom, and be constructed of acid-resistant concrete, acid-resistant fiberglass or plastic.

e.The inlet baffle must extend at least six inches [15.24 centimeters], but not more than twenty percent of the total liquid depth below, the liquid surface and at least one inch [2.54 centimeters] above the crown of the inlet sewer.

f.The outlet baffle and the baffles between compartments must extend below the liquid surface a distance equal to forty percent of the liquid depth, except that the penetration of the indicated baffles or sanitary tees for horizontal cylindrical tanks must be thirty-five percent of the total liquid depth. They also must extend above the liquid surface. In no case may they extend less than six inches [15.24 centimeters] above the liquid surface.

g.Inlet baffles must be no less than six inches [15.24 centimeters] or no more than twelve inches [30.48 centimeters] measured from the end of the inlet pipe to the nearest point on the baffle. Outlet baffles must be six inches [15.24 centimeters] measured from beginning of the outlet pipe to the nearest point on the baffle. Sanitary tees used as baffles must be at least four inches [10.16 centimeters] in diameter.

h.The inlet and outlet must be located opposite each other along the axis of maximum dimension. The horizontal distance between the nearest points of the inlet and outlet devices must be at least four feet [1.22 meters].

i.There may be one or more manholes. Manholes must be at least eighteen inches [45.72 centimeters] in diameter, and located within six feet [1.83 meters] of all walls of the tank.

The manhole must extend through the cover to a point within twelve inches [30.48 centimeters] but no closer than six inches [15.24 centimeters] below finished grade. The manhole cover must be corrosion resistant, rated three hundred-pound [136.07-kilogram] load bearing, and covered with at least six inches [15.24 centimeters] of earth. When in the opinion of the administrative authority the manhole is permitted above finish grade, it must be safely secured.

j.There must be an inspection pipe of at least four inches [10.16 centimeters] in diameter or a manhole over both the inlet and outlet devices. The inspection pipe must extend through the cover and be capped flush or above finished grade. A downward projection of the centerline of the inspection pipe must be directly in line with the centerline of the inlet or outlet device.

3.Multiple tanks.

a.When more than one tank is used to obtain the required liquid volume, the tanks must be connected in series.

b.No more than four tanks in series can be used to obtain the required liquid volume.

c.The first tank must be no smaller than any subsequent tanks in series.

4.Septic tank materials. See table 14-1 of the Uniform Plumbing Code.

5.Depth of septic tank. Where septic tanks are installed above frostline, precautions must be taken to prevent the septic tank from freezing.

6.Service limited. No septic tank shall serve more than one property unless authorized by the

7.Disposal of effluent. The effluent from all septic tanks shall be disposed of underground by subsurface absorption trench, seepage beds, or approved alternative systems. 62-03.1-03-08. Distribution box.

1.Use. A distribution box may be used when more than one line of absorption field or more than one seepagebed is used.

2.Connection. Each lateral line shall be connected separately tothe distribution box and shall not be subdivided.

3.Invert level. The inlet invert shall be at least one inch [2.54 centimeters] above the invert of the outlets. The size of the distribution box shall be sufficient to accommodate the number of lateral lines.

4.Watertight. The distribution box shall be of watertight construction arranged to receive the septic tank effluent sewer and with an outlet or connecting line serving each trench or seepage bed.

5.Inspection. The sides of the box should extend to within a short distance of the ground surface to permit inspection and shall have a concrete marker at grade. 62-03.1-03-09. Absorption trenches.

1.Design. Absorption trenches shall be designed and constructed on the basis of the percolation test results or other soil data. Trench bottom area required is shown in the table in subsection 4. The bottom of the trench shall be dug so it is dead level throughout its length.

The maximum depth to the bottom of absorption trenches may not exceed forty-eight inches [121.92 centimeters]. The trench bottom must be at least twenty-four inches [60.96 centimeters] above the mottled soil condition indicating a water table or from standing water in the borehole.

2.Filter material. The filter material shall cover the four-inch [10.16-centimeter] diameter pipe to a depth of two inches [3.08 centimeters] measured from the crown of the pipe and extend the full width of the trench and shall be not less than six inches [15.24 centimeters] deep beneath the bottom of the four-inch [10.16-centimeter] diameter pipe. The filter material may be washed rock or crushed stone ranging in size from one inch to three inches [2.54 centimeters to 7.62 centimeters]. The filter material shall be covered by red rosin paper40 , hay, straw, or approved filter fabric40 , as the laying of the pipe proceeds. Approved graveless systems may be used in lieu of rockfill providing an equivalent surface area of soil is utilized.

3.Spacing. Trenches must have a minimum spacing of undisturbed earth of six feet [1.83 meters] for eighteen-inch to twenty-four-inch [45.72-centimeter to 60.96-centimeter] trench widths and nine feet [2.74 meters] for trenches up to thirty-six inches [91.44 centimeters]wide.

4.Absorption field. The size and requirements for absorption fields shall conform to those given in the following table:

Table - Recommended absorption trench area.

Depth of Rock Percolation Rate Soil Classification Below Distribution Pipe Minutes/Inch 6" 12" 18" 24" -Trench bottom area loading rate, gal/ft /day .1 to 5 Sand 1.2 1.5 1.80 2.1 6 to 15 Sandy loam 0.8 1.0 1.20 1.4 16 to 30 Loam 0.6 0.75 0.90 1.05 31 to 45 Silt loam 0.5 0.63 0.76 0.89 46 to 60 Clay loam 0.45 0.57 0.68 0.79 -Square feet of trench bottom/bedroom .1 to 5 125 100 85 70 6 to 15 190 150 125 110 16 to 30 250 200 165 145 31 to 45 300 240 200 170 46 to 60 330 265 220 190 Based on sewage volume of 150/GPD/Bedroom

5.Absorption lines.

a.Gravity distribution. Absorption lines shall be constructed of four-inch [10.16-centimeter]

pipe. For approved plumbing materials, see table 14-1 of chapter 14 of the Uniform Plumbing Code.

b.Pressure distribution. Absorption lines must be constructed of one and one-half-inch to two-inch [3.81-centimeter to 5.08-centimeter] rigid plastic pipe with one-fourth-inch [6.35-millimeter] holes drilled in the bottom of the pipes. The number ofperforations and spacing of perforations for different diameter pipes for pressure distribution laterals must not exceed ten percent of the average pressure head on the perforations. The pipe and connections must be able to withstand a pressure of at least forty pounds per square inch. The perforated laterals should be attached to a two-inch [5.08-centimeter] manifold pipe and should have the ends capped. The laterals should be spaced no further than forty inches [101.6 centimeters] on center and no further than twenty inches [50.80 centimeters] from the edge of the rock. Pipe must be installed level and capped at the ends. The manifold must be supported and backfilled by hand.

6.Grade. The absorption trench bottom must be level. 62-03.1-03-10. Piping material.

All piping from building drain to sewage treatment system shall be four inches [10.16 centimeters] or larger service schedule 40 acrylonitrile-butadiene-styrene or polyvinyl chloride plastic pipe, type PSP PVC sewer pipe SDR 3540 , and fittings A.S.T.M. D3033 or D3034, exclusive of the absorption lines, which shall be as insubsection 5 of section 62-03.1-03-09. 62-03.1-03-11. Pumps and pump systems.

This section pertains to pumps installed after the septic tank. Sumps and ejectors installed before the septic tank must meet the requirements set forth in section 710.0 of the Uniform Plumbing Code.

1.Pumping chambers.

a.The pumping chambers must be watertight and constructed of corrosion-resistant material.

b.The working capacity of the pumping chamber must equal one-fourth of the daily sewage flow. Total capacity of the pumping chamber must equal or exceed daily sewage flow.

c.A secure cover must be provided that is either bolted on or heavy enough to prevent unauthorized entry.

d.An external electrical outlet must be provided for connection to the pump and control switches. Openings for wiring into the pump chamber must be sealed.

e.No electrical splices or connections shall be located in the pump chamber or riser.

2.Pumps.

a.Effluent lift pumps must be of cast bronze, cast iron, or plastic construction and must be designed for handling septic tank effluent. Pedestal sump pumps with an open motor are not allowed.

b.Set the pump on a pedestal on the bottom of the pump chamber to minimize grit and solids entering the impeller.

c.The pump must have maximum lift capability at least five feet [1.52 meters] greater than the actual elevation, plus pipe friction loss. A pump to a sewage mound ("Wisconsin mound") shall deliver seven and five-tenths gallons [28.38 liters] per minute for each one hundred square feet [9.29 square meters] of rock area.

d.Outlet piping must be one and one-fourth inches [31.75 millimeters] in diameter or greater. The pipe must be laid below frostline or uniformly graded to drain back to the pump chamber. Volume of drain back should not exceed ten percent of the working capacity of the pump chamber. If piping is set to drain back, any check valves on the pump should be removed and a one-fourth-inch [6.35-millimeter] drainhole drilled on the low point of the outlet pipe. Piping connection to the pump must be with a union or quick disconnect coupling near the top of the pump chamber.

3.Pump controls.

a.On-off switching for sewage pumps must be sealed mercury float switches or of a type approved by the administrative authority.

b.Electrical connections must not be made in the pump chamber or pump chamber riser. 62-03.1-03-12. Alternative systems.

1.Mounds. Mounds may be constructed on soils having a percolation rate faster than one hundred twenty minutes per inch [2.54 centimeters]. For soils slower than one hundred twenty minutes per inch [2.54 centimeters], either the system must be moved to more amenable soil or see subsection 2 on lagoons.

a.Location. Mounds may not be located on sites of greater than twelve percent slope. For moderately permeable soils, the administrative authority may approve construction on slopes over six percent. Mounds may not be built in areas where water may pond.

b.Design. The basal sand area of the mound must be sized on the basis of eighty-three hundredths gallons [3.12 liters] per square foot [0.09 square meter] per day. The basal sand may be twelve inches to twenty-four inches [30.48 centimeters to 60.96 centimeters] deep and must extend at least five feet [1.52 meters] beyond the rock filter material in all directions. The rock layer may be twelve inches to twenty-four inches [30.48 centimeters to 60.96 centimeters] deep and may not exceed ten feet [3.05 meters] in width. Only pressure distribution may be used in the mound, so piping shall be one and one-half-inch to two-inch [38.10-millimeter to 50.80-millimeter] diameter rigid ABS or PVC. A one and one-fourth inch [31.75 millimeters] hole must be drilled every thirty-six inches [91.44 centimeters] and the ends of the lateral must be capped. A one-fourth inch [6.35 millimeters] hole shall be drilled in the top of the cap to serve as a siphon break.

Laterals shall be spaced no further than forty inches [101.60 centimeters] on center and no further than twenty inches [50.80 centimeters] from the edge of the filter rock. Surface water must be diverted by a berm located uphill from the base of the mound.

c.Specifications. Sand must be uniformly graded, with no more than fifteen percent fines.

Filter rock must be one inch to three inches [25.40 millimeters to 76.20 millimeters] in diameter, washed or screened to less than ten percent fines.

A jar test should be used to determine sand suitability. In a one quart [.95 liters] jar, place two inches [50.8 millimeters] of the sand. Add water to three-fourths level, cap, shake, and set aside to settle. If a layer of silt is present on top which is more than one-eighth inch [3.18 millimeters] thick, the sand is not suitable for mound construction.

d.Construction.

(1)Scarify the area with backhoe teeth or a cultivator. Do not remove topsoil. Bring outlet pipe from pump up into the center of the mound area.

(2)Lay sand on scarified area. Do not compact the soil with machinery tires. Level sand to desired depth.

(3)Lay filter rock down the center of the sand layer. Level.

(4)Connect piping to manifold and lay pipe on rock. Cover pipe with rock and level by hand. Holes must be on bottom of the pipe.

(5)Lay sand up to the top of the rock on all sides, sloping sand away at a three-to-one or four-to-one slope.

(6)Cover rock with red rosin paper, hay, or filter fabric.

(7)Backfill entire mound to a three-to-one or four-to-one grade. Downhill side of mound on slopes must be backfilled at a four-to-one or longer grade. Cover mound with topsoil.

(8)Seed grass over mound. Trees and shrubs may be planted on the toe and up the sides of the mound, but do not plant shrubs or trees on top. If vegetation is not established before winter, cover mound with hay or straw to prevent freezing.

2.Lagoons - Total containment. In areas where normal septic systems will not function, and where the administrative authority finds that a nuisance will not be presented, a lagoon may be used for onsite sewage disposal.

a.Design. Depth may not exceed five feet [1.52 meters], and side berms shall be graded to three-to-one for proper aeration. The site must be fenced, and the berms must be seeded. The berms must be at least one foot [0.30 meter] higher than the liquid level at design capacity. Inlet pipes must discharge onto a splash pad to minimize erosion. Outlet pipes may not be installed without the approval of the administrative authority.

b.Maintenance. Weeds must be controlled in the lagoon and on the berms to maximize aeration.

c.Prohibitions. Lagoons may not be constructed on sand, gravel, or light loamy soils. No lagoon may be discharged into receiving waters or onto the ground without the approval of the department of environmental quality.

3.Alternative design. Alternate designs for construction of sewage treatment systems complying with the intent of this code may be submitted to the administrative authority for approval. 62-03.1-03-13. Chemical toilets.

1.All requests for permission to erect and use chemical toilets shall be approved by the

2.Where approved by the administrative authority, chemical toilets shall be as follows:

A chemical toilet consists of a toilet seat connected by a metal hopper to a metal tank containing chemicals, usually sodium hydroxide. All connections to the toilet seat and the tank shall be watertight. A rod shall extend above the floor of the room to operate the agitator in the chemical tank.

3.A supply of the chemical shall be available in a closed container for periodic additions to the toilet. 62-03.1-03-14. Privies.

1.All requests for permission to erect and use privies shall be approved by the administrative

authority.

2.General specifications for the design and construction of a privy. A privy pit must be constructed by providing a watertight structure in the pit. The watertight structure shall provide a minimum capacity of sixty cubic feet [1.70 cubic meters]. A privybuilding shall be placed over the structure. The floor of this building shall be of wood or concrete with the privy seat of suitable material which is easily cleaned and serviceable. A vent located adjacent to the seat shall extend from the vault to a point above the roof of the building. The seat shall be provided with a cover which shall be self-closing.

All openings in the building shall be screened to prevent the entrance of flies. The building shall be so constructed so as to prevent the entrance of rats to the vault. The privy door shall be self-closing.

3.Removable cans. When removable cans are used in a privy, they shall be placed in watertight vaults and provision made for removing the seat so the cans can be moved for disposal of the contents in a manner acceptable to the administrative authority. The privy building shall comply with the above specifications for a pit privy building. 62-03.1-03-15. Septic tank pumpers.

1.Every person engaged in the business of removing and disposing of the solid and liquid contents of private sewage treatment systems shall obtain an annual license from the department of environmental quality.

2.All solid and liquid contents of chemical toilets, septic tanks, pump chambers, and watertight pits for septic tank effluent shall be removed, when necessary, and disposed of in conformance with subsections 3 through 9.

3.Every pumper shall obtain a license to engage in such operations as specified in the appropriate rules of the department of environmental quality, chapter 33.1-21-01.

4.A metal license tag with the number of the license issued shall be posted in a conspicuous place on the left side of the servicing unit.

5.Every vehicle used for pumping purposes shall be equipped with a watertight tank so that there will be no spillage on private premises or on highways or roads.

6.All portable receptacles used for transporting liquid or solid waste shall be watertight, equipped with tight-fitting lids, and cleaned daily.

7.All pumps and hose lines shall be maintained so as to prevent leakage.

8.All waste material shall be disposed of in such a place and in such a manner as will not constitute a nuisance or a menace to public health.

9.Waste material collected by a pumper shall not be discharged into ditches, watercourses, lakes, ponds, tidewater, or at any point where it can pollute any water supply, bathing area, or shellfish growing area. It shall not be deposited on the surface of the ground within one thousand feet [304.8 meters] of any residence or public road.

Article 62-04 Water Conditioning Code

Chapter 62-04-01 Definitions

N.D. Admin. Code 62-04-01-01 Definitions

For the purpose of this article, the following terms shall have the meaning indicated in this section.

No attempt is made to define ordinary words which are used in accordance with their established dictionary meaning except where it is necessary to define their meaning as used in this article to avoid misunderstanding.

1."Absorption" means the physical, electrostatic, surface attraction of an absorbent for molecules of a gas, liquid, dissolved or suspended substance.

2."Accessible" means having access thereto but which first may require the removal of an access panel, door, or similar obstruction. "Readily accessible" means direct access without the necessity of removing or moving any panel, door, or similar obstruction.

3."Acid neutralizer" means neutralizer.

4."Acidity" means the presence of compounds that release hydrogen in solution.

5."Administrative authority" means the individual official, board, department, or agency established and authorized by a state, county, city or other political subdivision created by law to administer and enforce the provisions of the water conditioning code as adopted or amended.

6."Air break (drainage system)" means a piping arrangement in which a drain from a fixture, appliance, or device discharges indirectly into a fixture, receptacle, or interceptor at a point below the flood level rim of the receptacle so installed as to prevent backflow or siphonage.

7."Airgap (drainage system)" means the unobstructed vertical distance through the free atmosphere between the outlet of waste pipe and the flood level rim of the receptacle into which it is discharging.

8."Airgap (water distribution system)" means the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture or other device and the flood level rim of the receptacle.

9."Alkalinity" means the presence of bicarbonates, carbonates, or hydroxides in water.

10."Anchors" means supports.

11."Approved" means accepted or acceptable under an applicable standard stated or cited in this

article, or accepted as suitable for the proposed use under procedures and powers of the administrative authority.

12."Backflow" means the flow of water or other liquids, mixtures, or substances into the distributing pipes of a potable supply of water from any source or sources other than its intended source. Backsiphonage is one type of backflow.

13."Backflow connection" means any arrangement whereby backflow can occur.

14."Backflow preventer" means a device or means to prevent backflow.

15."Backsiphonage" means the flowing back of used, contaminated, or polluted water from a plumbing fixture or vessel or other sources into a potable water supply pipe due to a negative pressure in such pipe.

16."Backwash filter" means any filter requiring reverse flow for maintenance.

17."Backwashing" means reversing the flow of water through a bed of ion exchanger or filter material.

18."Brine" means a solution of sodium chloride (salt) used for regenerating water softeners.

19."Bypass" means a connection or a valve system that allows raw water to be supplied while the water conditioner is being cleaned or media changed or serviced in any manner.

20."Building" means a structure having walls and a roof designed and used for the housing, shelter, enclosure, or support of persons, animals, or property.

21."Building classification" means the arrangements adopted by the administrative authority for the designation of buildings in classes according to occupancy.

22."Calcium" is one of the principal elements making up the earth's crust, the compounds of which when dissolved in water make the water hard. The presence of calcium in water is a factor contributing to the formation of scale and insoluble soap curds which are means of clearly identifying hard water.

23."Calcium carbonate equivalent" is commonly used for expressing all forms of hardness and other salts in the same terms.

24."Capacity" is expressed in total gallons (liters) of water treated meeting the specifications and produced in a defined period of time.

25."Cartridge" means any removable preformed or prepackaged component, containing the filter media.

26."Cartridge filter" means a filter using a cartridge or cartridges.

27."Cation exchange", in water softening, is principally the exchange of calcium and magnesium ions in water for sodium ions on an insoluble ion exchange material. Ferrous iron and other metals such as manganese and aluminum are sometimes present in small quantities. These metals are also exchanged, but they may precipitate and foul the exchanger bed.

28."Clear water waste" means cooling water and condensate drainage from refrigeration, and air-conditioning equipment; cooled condensate from steam heating systems; cooled boiler blowdown water; water softeners; wastewater drainage from equipment rooms and other areas where water is used without an appreciable addition of oil, gasoline, solvent, acid, etc., and treated effluent in which impurities have been reduced below a minimum concentration considered harmful.

29."Code" means this article, subsequent amendments thereto, or any emergency rule or

regulation which the administrative authority having jurisdiction may lawfully adopt.

30."Color throw" means the imparting of color by any part of a water softener to the effluent during any state of the operating cycle.

31."Compensated hardness" means water with a total hardness of over four hundred milligrams per liter as calcium carbonate and over one hundred milligrams per liter of sodium as calcium carbonates.

32."Corrosion" means the attack by water on any part of a water system, causing the wasting away of metal parts. This would include the most noticeable effects of corrosion, which are: leakage, flow stoppage, valve failure, etc.

33."Cross connection" means any connection or arrangement between two otherwise separate piping systems, one of which contains potable water and the other either water of unknown or questionable safety or steam, gas, or chemical whereby there may be a flow from one system to the other, the direction of flow depending on the pressure differential between the two systems. (See backflow and backsiphonage.)

34."Cubic feet" means the volumetric unit used for measuring ion exchange materials. Volume is measured on an in-place, backwashed, drained, and settled condition.

35."Deionization" means the removal of all ionized minerals from the water in a two step ion exchange process.

36."Demineralization" means essentially the same as deionization.

37."Developed length" means the length of a pipe line measured along the center line of the pipe and fittings.

38."Disinfection" means the process of destroying harmful micro-organisms, done in accordance with section 62-03-10-09.

39."Distillation" means a process of removing solids from water by converting the water to vapor (by heating), and condensing the water (by cooling), and collecting the condensate.

40."Distributors" means devices to distribute or collect the water.

41."Drain" means any pipe which carries wastewater or water-borne wastes in a building drainage system.

42."Drain line" means a line used to carry backwash water, spent regenerant, and rinse water to the waste system.

43."Drainage system" includes all the piping, within public or private premises, which conveys sewage, rainwater, or other liquid wastes to a point of disposal. It does not include the mains of a public sewer system or private or public sewage-treatment or disposal plant.

44."Dwelling unit" means one or more rooms with provision for living, sanitary, sleeping, cooking, and eating facilities arranged for the use of one family or individual.

45."Effective opening" means the minimum cross-sectional area at the point of water supply discharge, measured or expressed in terms of (a) diameter of a circle, or (b) if the opening is not circular, the diameter of a circle of equivalent cross-sectional area.

46."Effluent" means the water or solution which emerges from a water conditioner during any phase of the operating cycle.

47."Existing work" means a plumbing system or any part thereof installed prior to the effective date of this article.

48."Filter" means a device installed as part of the water system through which water flows for the removal of turbidity, taste, color, or odor.

49."Filter area" means the effective cross-sectional area applicable to the surface type filter media only, usually expressed in square feet.

50."Filter medium (filter media)" means medium.

51."Fixture supply" means the water supply pipe connecting a fixture to a branch water supply pipe or directly to a main water supply pipe.

52."Fixture unit (drainage - d.f.u.)" means a measure of the probable discharge into the drainage system by various types of plumbing fixtures. The drainage fixture-unit value for a particular fixture depends on its volume rate of drainage discharge, on the time duration of a single drainage operation, and on the average time between successive operations.

53."Fixture unit (supply - s.f.u.)" means a measure of the probable hydraulic demand on the water supply by various types of plumbing fixtures. The supply fixture-unit value for a particular fixture depends on its volume rate of supply, on the time duration of a single supply operation, and on the average time between successive operations.

54."Floc" means a flocculent mass formed by the aggregation of a number of fine suspended particles.

55."Flood level rim" means the edge of the receptacle from which water overflows.

56."Flooded" means the condition which results when the liquid in a container or receptacle rises to the flood-level rim.

57."Flow pressure" means the pressure in the water supply pipe near the faucet or water outlet while the faucet or water outlet is wide-open and flowing.

58."Flow rate" means the quantity of water or regenerant flowing, measured in gallons per minute.

59."Galvanic corrosion" means when dissimilar metals are in contact with each other and with a solution which can carry electricity, a galvanic cell is established, which generates a flow of electricity, and as a result, one of the metals is gradually consumed.

60."Grade" means the fall (slope) of a line of pipe in reference to a horizontal plane. In drainage it is usually expressed as the fall in a fraction of an inch per foot length of pipe.

61."Grains per gallon" means a common basis of reporting water analysis in the United States and Canada. One grain per United States gallon equals seventeen and one-tenth milligrams per liter or seventeen and one-tenth parts per million. One grain per Imperial gallon equals fourteen and three-tenths milligrams per liter or fourteen and three-tenths parts per million.

One grain is one seven-thousandths pounds or six hundred forty-seven ten-thousandths.

62."Ground water" means subsurface water occupying the zone of saturation. Confined ground water is a body of ground water overlain by material sufficiently impervious to sever free hydraulic connection with overlying ground water. Free ground water is ground water in the zone of saturation extending down to the first impervious barrier.

63."Hangers" means supports.

64."Hardness" means dissolved calcium and magnesium salts in water. Compounds of these two elements are responsible for most scaling in pipes and water heaters, and cause numerous problems in laundry, kitchen, and bath. Hardness is usually expressed in grains per gallon as calcium carbonate equivalent.

65."Hardness leakage" means calcium and magnesium present in water after passing through a water softener.

66."Hard water" means treated water containing calcium and magnesium salts in concentration of one grain per gallon [17.1 milligrams per liter] or more (as calcium carbonate equivalent).

67."Horizontal pipe" means any pipe or fitting which makes an angle of less than forty-five degrees with the horizontal.

68."Hydrogen sulfide" means an inflammable, poisonous gas that is found in some water supplies and which makes water smell like rotten eggs.

69."Indirect waste pipe" means a waste pipe which does not connect directly with the drainage system, but which discharges into the drainage system through an air break or airgap into a trap, fixture, receptor, or interceptor.

70."Individual water supply" means a supply other than an approved public water supply which serves one or more families.

71."Insanitary" means contrary to sanitary principles - injurious to health.

72."Installation" means the piping or valving by which water conditioners are connected into the water supply system, including a drain line.

73."Installed" means altered, changed, or a new installation.

74."Ion exchange" means a process whereby ions in solution are interchanged by a reactive material (see ion exchanger).

75."Ion exchanger" means an insoluble reactive material capable of interchanging ions combined with the material for ions in the solution.

76."Iron" is an element often present in ground waters in a soluble form (such as ferrous bicarbonate) in quantities usually ranging from zero to ten parts per million. It is sometimes present in larger amounts. Iron may exist in surface waters due to natural causes or pollution.

Iron in solution is susceptible to oxidation, precipitating as reddish-brown floc when contacted by air (causing staining and discoloration). Iron can be removed by aeration or chlorination followed by filtration. Iron in solution can be removed by ion exchange. Oxidizing filters such as manganese treated zeolite are used for removing large amounts of iron from water supplies.

77."Liquid waste" means the discharge from any fixture, appliance, area, or appurtenance, which does not contain human or animal waste matter.

78."Magnesium" is one of the elements making up the earth's crust, the compounds of which when dissolved in water make the water hard. The presence of magnesium in water is a factor contributing to the formation of scale, and insoluble soap curds which are means of clearly identifying hard water.

79."Main" means the principal pipe artery to which branches may be connected.

80."Manganese greensand" means a processed, natural alumino silicate, converted to the oxidized manganese form. This is a granular material, generally used for the removal of iron or sulfides, in oxidizing filters.

81."Manganese zeolite" means a processed natural, or synthetic alumino silicate, converted to the oxidized manganese form (see manganese greensand).

82."May" is a permissive term.

83."Media" is the plural of medium.

84."Medium" means the active material in a filter.

85."Micron" means a linear measure of size; one-thousandth of a millimeter; denoted by the Greek letter symbol u. The micron is used in filtration work to define particle size, in which case it refers to the diameter, or the largest dimension of the particle. It is also used to measure the size of pores, openings, or wire mesh.

86."Milligrams per liter" is a common basis of reporting water analysis in the United States and Canada. One milligram per liter equals one pound per million pounds of water; seventeen and one-tenth milligrams per liter equals one grain per United States gallon.

87."Neutralizer - (neutralizing filter)" means a filter type, mainly used to neutralize acidity or reduce free carbon dioxide in water.

88."Nonpotable water" means water not safe for drinking or for personal or culinary use.

89."Nuisance" means public nuisance at common law or in equity jurisprudence; whatever is dangerous to human life or detrimental to health; whatever building, structure, or premise is not sufficiently ventilated, sewered, drained, cleaned, or lighted, in reference to its intended or actual use; and whatever renders the air or human food or drink or water supply unwholesome.

90."Operating pressure" means the pressure range within which the equipment properly functions.

91."Pathogenic organisms" means organisms that are capable of producing disease.

92."Person" means a natural person, the natural person's heirs, executors, administrators or assigns, and includes a firm, partnership or corporation, its or their successors or assigns.

Singular includes plural and male includes female.

93."Ph value" means a number denoting alkalinity or acidity. Numbers below seven indicate acidity, which increases as the number becomes smaller. Numbers above seven indicate alkalinity, which increases as the number becomes larger. The Ph scale runs from zero to fourteen, seven being the neutral point.

94."Pitch" means grade.

95."Plumbing appliance" Any one of a special class of plumbing fixtures which is intended to perform a special plumbing function. Its operation or control may be dependent upon one or more energized components, such as motors, controls, heating elements, or pressure or temperature-sensing elements. Such fixtures may operate automatically through one or more of the following actions: a time cycle, a temperature range, a pressure range, a measured volume or weight; or the fixture may be manually adjusted or controlled by the user or operator.

96."Plumbing appurtenance" means a manufactured device, or a prefabricated assembly, or an on-the-job assembly of component parts, and which is an adjunct to the basic piping system and plumbing fixtures. An appurtenance demands no additional water supply, nor does it add any discharge load to a fixture or the drainage system. It is presumed that it performs some useful function in the operations, maintenance, servicing, economy, or safety of the plumbing system.

97."Plumbing inspector" means administrative authority.

98."Plumbing system" includes the water supply, water-treating or water-using equipment, and distribution pipes, plumbing fixtures and traps; soil, waste, and vent pipes, sanitary and storm drains and building sewers, including their respective connections, devices, and appurtenances to an approved point of disposal.

99."Pollution" means the addition of sewage, industrial wastes, or other harmful or objectionable material to water. Sources of sewage pollution may be privies, septic tanks, subsurface irrigation fields, seepage pits, sink drains, barnyard wastes, etc.

100."Portable exchange tank" means a softener or filter unit which is owned by a dealer and supplied on an exchange basis to a customer.

101."Potable water" means water free from impurities present in amounts sufficient to cause disease or harmful physiological effects and conforming in its bacteriological and chemical quality to the requirements of the public health service drinking water standards or the regulations of the public health authority having jurisdiction.

102."Precoat" means the application of a loose filter medium to a supporting membrane.

103."Pressure drop or pressure loss" means a differential in pressure during flow due to frictional resistance in the system. It may be expressed in pounds per square inch of feet of head (of water).

104."Private or private use" applies, in the classification of plumbing fixtures, to fixtures in residences and apartments and similar installations.

105."Public or public use" applies in the classification of plumbing fixtures, to every fixture not defined under private use and public includes all installations where a number of fixtures are installed and their use may be restricted or unrestricted.

106."Public water main" means a water supply pipe for public use controlled by public authority.

107."Rated service flow" means the manufacturer's specified maximum flow at which the conditioner will deliver water for a minimum period of ten minutes at a pressure drop not to exceed fifteen pound per square inch [6.80 kilograms per 6.45 square centimeters].

108."Rated softening capacity" is based on grains of hardness removed (as calcium carbonate) while producing soft water between successive regenerations and must be related to pounds of salt required for each regeneration.

109."Raw water" means water at the inlet of the water treating unit.

110."Receptor" means a fixture or device which receives the discharge from indirect waste pipes.

111."Recharging cycle" means when a water softener becomes exhausted and is incapable of removing hardness, the bed must be "recharged" by passing a strong solution of salt through it.

112."Regeneration" includes, in general, the backwash, brine, and fresh water rinse steps, necessary to prepare the exchanger bed for service after exhaustion. Specifically, the term may be applied to the "brine" step in which a sodium chloride solution is passed thru the exchanger bed. The sodium ions displace the hardness ions from the exchanger to permit the hardness to be rinsed to drain; also, includes the maintenance steps (not necessarily in this order) to backwash, precoating, or fresh water rinse or other treatment necessary to prepare or restore a conditioner for service.

113."Resin" means a synthetic organic ion exchange material such as high capacity cation exchange resin widely used in water softeners.

114."Rim" means an unobstructed open edge of a fixture.

115."Rinse" means that part of the cycle of a water conditioner operation where water is introduced to remove spent backwash water or regenerant prior to placing the conditioner into service.

116."Riser" means a water supply pipe which extends vertically one full story or more to convey water to branches or to a group of fixtures.

117."Roughing-in" means the installation of all parts of the plumbing system which can be completed prior to the installation of fixtures. This includes drainage, water supply, and vent piping, and the necessary fixture supports, or any fixtures that are built into the structure.

118."Rust" - see iron.

119."Salt" means high purity sodium chloride of a granular, rock, or briquetted type used for regenerating a water softener.

120."Scale" means a hard insoluble mineral deposit (usually of calcium and magnesium compounds).

121."Service run" means that part of the operating cycle of a water conditioner in which the raw water supply is passed through a conditioner, thereby producing quality water.

122."Shall" is a mandatory term.

123."Shielded (insulated)" means the separation of metallic parts by a nonconductor.

124."Slope" means grade.

125."Soft water" means treated water containing less than one grain per gallon (17.1 milligrams per liter) dissolved calcium and magnesium salts (as calcium carbonate equivalent).

126."Soil pipe" means a pipe which conveys sewage containing human or animal waste to the building drain or building sewer.

127."Solution feeder" means a small pump or eductor unit used to feed a measured amount of chemical solution into a water supply to solve a water problem.

128."Supports" means devices for supporting and securing pipe, fixtures, and equipment.

129."Suspended matter" means all undissolved material in water.

130."Turbidity" means any undissolved materials in water, such as finely divided particles of sand, clay, etc.

131."Upflow" means the direction (up) in which water flows through the ion exchange bed during any phase of the operating cycle.

132."Vacuum" means any pressure less than that exerted by the atmosphere.

133."Vacuum breaker" means backflow preventer.

134."Vacuum breaker, nonpressure type (atmospheric)" means a vacuum breaker which is not designed to be subject to static line pressure.

135."Vacuum breaker, pressure type" means a vacuum breaker designed to operate under conditions of static line pressure.

136."Vacuum relief valve" means a device to prevent excessive vacuum in a pressure vessel.

137."Vertical pipe" means any pipe or fitting which makes an angle of forty-five degrees or less with the vertical.

138."Waste" means liquid waste and industrial waste.

139."Waste pipe" means a pipe which conveys only waste.

140."Water conditioning" is any processing of water which renders it more satisfactory for use.

141."Water distributing pipe" means a pipe within the building or on the premises which conveys water from the water service pipe to the point of usage.

142."Water outlet" means a discharge opening through which water is supplied to a fixture, into the atmosphere (except into an open tank which is part of the water supply system), to a boiler or heating system, to any devices or equipment requiring water to operate but which are not part of the plumbing system.

143."Water riser pipe" means riser.

144."Water service pipe" means the pipe from the water main or other source of potable water supply to the water distributing system of the building served.

145."Water softener" means a device installed as part of a water system which produces soft water by cation exchange removing calcium and magnesium (hardness from flowing water, replacing it with sodium, thereby requiring periodic regeneration with sodium chloride (salt).

146."Water supply system" means the water service pipe, the water-distributing pipes, and the necessary connecting pipes, fittings, control valves, and all appurtenances in or adjacent to the building or premises.

147."Zeolite" means a processed natural, or synthetic, alumino silicate. See also manganese greensand and manganese zeolite.

History

• General Authority: NDCC 43-18.1-03
• Law Implemented: NDCC 43-18.1-04

Chapter 62-04-02 General Provisions

N.D. Admin. Code 62-04-02-01 Conformance with code

All plumbing materials and water conditioning systems or parts thereof installed hereafter shall meet or exceed the minimum provisions of this article and conform to national sanitation foundation, underwriters laboratories, or water quality association listed standards.

History

• History: Amended effective January 1, 1992.

N.D. Admin. Code 62-04-02-02 Fittings and connections

1.Prohibited fittings. No running threads, bands, or saddles shall be used in the drainage system. No drainage or vent piping shall be drilled, tapped, burned, or welded. The provisions of this subsection may be waived by the administrative authority.

2.Obstruction to flow. No fitting, connection, device, or method of installation which obstructs or retards the flow of water in the water conditioning system in an amount greater than the normal frictional resistance to flow, shall be used unless it is indicated as acceptable in this

article or is approved by the administrative authority as having a desirable and acceptable function and as of ultimate benefit to the proper and continuing functioning of the water conditioning system.

N.D. Admin. Code 62-04-02-03 Health and safety

Where a health or safety hazard exists on a premise by reason of an existing installation, the owner or the owner's agent shall make such corrections as may be necessary to abate such nuisance and bring the water conditioning installation within the provisions of this article.

N.D. Admin. Code 62-04-02-04 Safety

Any part of a building or premise which is changed, altered, or required to be replaced as a result of the installation, alteration, renovation, or replacement of a water conditioning system, or any part thereof, shall be left in a safe, nonhazardous condition.

N.D. Admin. Code 62-04-02-05 Electrical grounding

Whenever the cold water distribution piping is used for grounding the electrical system it shall not be interrupted by a nonmetallic bushing, union, or valve unless an electrician licensed by the North Dakota electrical board installs a properly sized bonding jumper with approved clamps and connections. (Refer to article 250 of the National Electrical Code.)

N.D. Admin. Code 62-04-02-06 Workmanship

Water conditioning systems shall be installed in workmanlike manner conforming to generally accepted good practice.

N.D. Admin. Code 62-04-02-07 Protection of pipes

1.Breakage. Pipes passing under or through walls shall be protected from breakage. Any plumbing pipe passing under a footing or through a foundation wall shall be provided with a relieving arch; or there shall be built into the masonry wall an iron-pipe sleeve two pipe sizes greater than the pipe passing through; or equivalent protection shall be provided as may be approved in writing by the administrative authority.

2.Corrosion. Pipe subject to corrosion by passing through or under corrosive fill, such as, but not limited to, cinders, concrete, or other corrosive material, shall be protected against external corrosion by protective coating, wrapping, or other means which will resist such corrosion.

3.Cutting or notching. Any structural member weakened or impaired by cutting, notching, or otherwise, shall be reinforced, repaired, or replaced, so as to be left in a safe structural condition in accordance with the requirements of the building code or as required by the proper administrative authority.

N.D. Admin. Code 62-04-02-08 Sleeves

In exterior walls annular space between sleeves and pipes shall be filled or rightly caulked with coal tar, asphaltum compound, lead, or other material found equally effective and approved as such by the administrative authority.

N.D. Admin. Code 62-04-02-09 Openings for pipes

In or on buildings where openings have been made in walls, floors, or ceilings for the passage of pipes, they shall be closed and protected by the installation of approved metal collars securely fastened to the adjoining structure.

N.D. Admin. Code 62-04-02-10 Used material or equipment

It shall be unlawful to sell, offer for sale, purchase, or install any used water conditioning material or equipment, unless it conforms to the standards and regulations set forth in this article.

N.D. Admin. Code 62-04-02-11 Condemned equipment

Any water conditioning equipment condemned by the administrative authority because of wear, damage, defects, or sanitary hazards shall not be used for water conditioning purposes.

N.D. Admin. Code 62-04-02-12 Connections to plumbing systems required

Every water conditioning unit, appliance, or appurtenance thereto which is to receive or discharge any liquid waste shall discharge to the sanitary drainage system of the building in accordance with the requirements of this article.

N.D. Admin. Code 62-04-02-13 Piping measurements

Except where otherwise specified in this article, all measurements shall be made to the center lines of the pipes.

Chapter 62-04-03 Materials

N.D. Admin. Code 62-04-03-01 Materials

1.Minimum standards. Materials shall conform at least to the standards cited in this chapter, which shall be considered minimum standards, when used in the construction, installation, alteration, or repair of water conditioning systems or parts thereof, except that:

a.The administrative authority shall allow the extension, addition to, or relocation of existing water pipes with materials of like grade or quality as permitted in subsection 1 of section 62-03-03-03.

b.Materials not covered by the standards cited in this chapter may be used with the approval of the administrative authority as permitted in subsection 2 of section 62-03-03-03.

2.General requirements. All materials, fixtures, or equipment used in the installation, repair, or alteration of any water conditioning system shall conform at least to the standards listed in this

chapter except as otherwise approved by the administrative authority under the authority contained in section 62-03-03-03.

All materials installed in water conditioning systems shall be so handled and installed as to avoid damage so that the quality of the material will not be impaired.

No defective or damaged materials, equipment, or apparatus shall be installed or maintained.

All materials used shall be installed in strict accordance with the standards under which the materials are accepted and approved, including the appendices of the standards, and in strict accordance with the manufacturer's instructions.

3.Standards applicable to plumbing materials. A material shall be considered approved if it meets one or more of the standards cited in Table 62-03-03, and in the case of plastic pipe, also the listed standard of the national sanitation foundation. Materials not listed in Table 62-03-03 shall be used only as provided for in subsection 2 of section 62-04-03-02 or as permitted elsewhere in this article.

4.Identification of materials. Materials shall be identified as provided in the standard to which they conform.

History

• General Authority: NDCC 43-18.1-03
• Law Implemented: NDCC 43-18.1-04

N.D. Admin. Code 62-04-03-02 Alternate materials and methods

1.Existing buildings. In existing buildings or premises in which plumbing installations are to be altered, renovated, or replaced, such new materials and work shall meet or exceed the provisions of this article. Where the administrative authority shall find that the full performance of bringing such work into compliance with all requirements of this article would result in exceptional undue hardship by reason of excessive structural or mechanical difficulty, or impracticability, a deviation may be granted by the administrative authority only where, and to the extent, necessary to ameliorate such exceptional or undue hardship, and only where, and to the extent, such deviation can be granted without impairing the intent and purpose of this

article. A record, open to inspection by the public shall be maintained by the administrative

authority of each and every deviation allowed under the terms of this subsection.

2.Approval. The administrative authority may approve the use of fixtures, appurtenances, materials, and methods of a type not conforming with the requirements of, nor expressly prohibited by, this article after determination that such fixture, appurtenance, material, or method is of such design or quality, or both, as to appear to be suitable, safe, and sanitary for the use for which it is intended. A record of such instances shall be maintained and shall be available to the public. Action shall be taken within reasonable time to amend this article so as to either authorize or prohibit such use. Any person desiring to install or use a fixture appurtenance, material, or method of a type not conforming with the requirements of, nor expressly prohibited by, this article shall, prior to such installation or use, submit to the administrative authority such proof as may be required to determine whether such fixture, appurtenance, material, or method is of such design or quality, or both, as to appear to be suitable, safe, and sanitary for the use for which it is intended. In the event the administrative

authority determines that it does appear to be suitable, safe, and sanitary for the use for which it is intended, the administrative authority may then permit such use; provided, that the manner of installation or use is otherwise in accordance with this article. In view of the special nature of these cases, such use shall be subject to periodic inspection by the administrative

authority and such fixture, appurtenance, material, or method shall, upon order, be discontinued or removed if such inspection indicates it is unsuitable, unsafe, insanitary, or contrary to the provisions of this or other applicable codes.

3.Tests. When there is insufficient evidence to verify claims for alternate materials the administrative authority may require as proof of suitability tests of compliance by an approved agency at the expense of the applicant.

4.Test procedure. Tests shall be made in accordance with generally recognized standards; but in the absence of such standards, the administrative authority shall specify the test procedure.

5.Repeated tests. The administrative authority may require tests to be repeated if, at any time, there is reason to believe that an alternate material no longer conforms to the requirements on which its approval was based.

6.Limitation of lead content. Pipe and fittings used in the potable water supply system may not contain more than eight percent lead.

History

• History: Amended effective October 1, 1989.
• General Authority: NDCC 43-18.1-03
• Law Implemented: NDCC 43-18.1-04

Chapter 62-04-04 Joints and Connections

N.D. Admin. Code 62-04-04-01 Tightness

Joints and connections in the water conditioning system shall be watertight for the pressure required by test.

N.D. Admin. Code 62-04-04-02 Types of joints for piping materials

1.Threaded. Every threaded joint shall conform to the American National Taper Pipe Thread, ANSI B2.1-1960. All burrs shall be removed. Pipe ends shall be reamed or filed out to size of bore, and all chips shall be removed. Pipe joint compound shall be used only on male threads.

2.Soldered. Joints in copper tubing shall be made by the appropriate use of approved brass or copper fittings. The surface to be joined by soldering shall be cleaned bright by manual or mechanical means. The joints shall be properly fluxed with an approved noncorrosive paste-type flux and made up with approved solder. For potable water used in copper, brass, or wrought copper fittings must be made with a solder and flux containing not more than two-tenths percent lead. Soldered joints may not be used for tube installed underground.

3.Flared. Every flared joint for annealed-temper copper water tube shall be made with fittings meeting approved standards. The tube shall be reamed and then expanded with a proper flaring tool.

4.Brazed. Brazed joints shall be made by first cleaning the surfaces to be joined down to the base metal, applying flux approved for such joints and for the filler metal to be used, and making the joint by heating to a temperature sufficient to melt the approved brazing filler metal on contact.

5.Slip. Every slip joint shall be made using approved packing or gasket material, or approved ground joint brass compression rings. Ground joint brass connections which allow adjustment of tubing but provide a rigid joint when made up shall not be considered as slip joints.

6.Expansion. Every expansion joint shall be of approved type and its material shall conform with the type of piping in which it is installed.

7.Split couplings. Couplings made in two or more parts and designed for use with plain end or grooved pipe or approved fittings and with compression gaskets may be used for hot and cold water piping and conductors and leaders. Each manufacturer must have the manufacturer's complete joining assembly approved for the intended use by one of the organizations listed in

chapter 62-04-03 or by the administrative authority.

History

• History: Amended effective October 1, 1989.

N.D. Admin. Code 62-04-04-03 Types of joints between different piping materials

Every joint from copper tube to threaded pipe shall be made by the use of brass or copper converter fittings. The joint between the copper pipe and the fitting shall be properly soldered, and the connection between the threaded pipe and the fitting shall be made with a standard pipe size screw joint.

N.D. Admin. Code 62-04-04-04 Unions

Unions in the water supply system shall be metal-to-metal with ground seats.

Chapter 62-04-05 Hangers and Supports

N.D. Admin. Code 62-04-05-01 Attachment to building

Hangers and anchors shall be securely attached to the building construction at sufficiently close intervals to support the piping and its contents.

N.D. Admin. Code 62-04-05-02 Vertical piping

1.Threaded pipe standard pipe size - at every other story height.

2.Copper tube - at each story height but not more than ten foot [3.05 meter] intervals.

N.D. Admin. Code 62-04-05-03 Horizontal piping

1.Horizontal pipe of the following materials shall be supported at not more than the distance intervals shown.

2.Steel threaded pipe - one-inch [2.54 centimeter] diameter or less - eight foot [2.44 meter] intervals. Over one-inch [2.54 centimeter] diameter - ten foot [3.05 meter] intervals.

3.Copper tube, one and one-fourth inch [31.75 millimeter] or less - six foot [1.83 meter] intervals.

4.Copper tube, one and one-half inch [38.1 millimeter] or over - ten foot [3.05 meter] intervals.

N.D. Admin. Code 62-04-05-04 Material

Hangers, anchors, and supports shall be of metal or other material of sufficient strength to support the piping and its contents.

N.D. Admin. Code 62-04-05-05 Strain and stresses in pipe

Piping in a water conditioning system shall be installed so as to prevent strains and stresses which will exceed the structural strength of the pipe. Provision shall be made for expansion and contraction of the piping.

Chapter 62-04-06 Indirect Waste Piping and Special Waste

N.D. Admin. Code 62-04-06-01 Indirect wastes

1.Airgap or air break required. All indirect waste piping shall discharge into the building drainage system through an airgap or air break, as set forth in this article.

2.Connections from water distribution system. Indirect waste connections shall be provided for drains, overflows, or relief pipes from the water distribution system by means of an airgap.

N.D. Admin. Code 62-04-06-02 Installation of indirect waste piping

1.Materials. Indirect waste piping shall meet the material, pipe sizing, and construction requirements of article 62-03.

2.Waste pipe. Any indirect waste pipe exceeding five feet [1.52 meters] in length shall be trapped.

3.Maximum length. Any indirect waste pipe exceeding fifteen feet [4.57 meters] shall be vented.

4.Cleaning. Indirect waste piping shall be so installed as to permit access for flushing and cleansing.

N.D. Admin. Code 62-04-06-03 Airgap and air break

1.Methods of providing an airgap. The airgap between the indirect waste and the building drainage system shall be at least twice the effective diameter of the drain served and shall be provided by one of the following methods:

a.To a receptor - Extend the indirect waste pipe to an open, accessible individual waste sink, floor drain, or other suitable fixture which is properly trapped and vented. The indirect waste shall terminate a sufficient distance above the flood level rim of the receiving fixture to provide the required airgap, and shall be installed in accordance with

article 62-03.

b.The inlet side of the fixture trap - Provide an airgap in the drain connection on the inlet side of the trap which receives the waste from the indirect waste.

2.Methods of providing an air break. When an air break is required between the indirect waste and the building drainage system, the distance to which the outlet of the indirect waste pipe extends below the flood level rim of the receptacle into which it is discharging shall be prescribed by the administrative authority.

N.D. Admin. Code 62-04-06-04 Receptors or sumps

1.Installation. Waste receptors or sumps serving indirect waste pipes shall not be installed in any toilet room, nor in any inaccessible or unventilated space such as a closet or storeroom.

2.Location. The receptor must be located so that the required airgap between the indirect waste line and receptor can be maintained under all conditions of backflow. If this is not possible then the receptor at such a location must be a sewer ejector installed as required under section 62-03-11-07 and the discharge must be indirectly connected to the building drainage system as required by subsection 1 of section 62-03-09-01.

3.Strainers and baskets. Every indirect waste receptor shall be equipped with a readily removable metal basket over which all indirect waste pipes shall discharge, or the indirect waste receptor outlet shall be equipped with a beehive strainer not less than four inches [10.16 centimeters] in height.

4.Splashing to be prevented. All plumbing receptors receiving the discharge of the indirect waste pipes shall be of such shape and capacity as to prevent splashing or flooding.

5.Domestic or culinary fixtures prohibited as receptors. No plumbing fixture which is used for domestic or culinary purposes shall be used to receive the discharge of an indirect waste except that in a residence a laundry tray may be used as a receptor for a water conditioning unit.

N.D. Admin. Code 62-04-06-05 Clear water wastes

Water lifts, expansion tanks, cooling jackets, sprinkler systems, drip or overflow pans, water conditioning units, or similar devices which waste clear water only, when emptying into the building drainage system, shall discharge through an indirect waste by means of an airgap or air break.

Chapter 62-04-07 Water Supply and Distribution

N.D. Admin. Code 62-04-07-01 Quality of water supply . Only potable water shall be accessible to plumbing fixtures supplying water for drinking, bathing, culinary use, or the processing of food, medical, or pharmaceutical products

N.D. Admin. Code 62-04-07-02 Identification of potable nonpotable water

In all buildings where dual water distribution systems, one potable water and the other nonpotable water, are installed each system shall be identified either by color marking or metal tags as required in ANSI A 13.1-1959 or other appropriate method as may be approved by the administrative authority.

N.D. Admin. Code 62-04-07-03 Water required

Every building equipped with plumbing fixtures and used for human occupancy or habitation shall be provided with a potable supply of cold water in the amounts and at the pressures specified in this

chapter. For residences or buildings in which people are employed, hot water shall be provided.

Every building shall have a private and individual connection to the public water supply system or a private water supply approved by the administrative authority of this article. Exception to this section shall be approved in writing by the administrative authority.

N.D. Admin. Code 62-04-07-04 Protection of potable water supply

1.General. A potable water supply system shall be designed, installed, and maintained in such manner as to prevent contamination from nonpotable liquids, solids, or gases from being introduced into the potable water supply through cross-connections or any other piping connections to the system.

2.Interconnections. Interconnection between two or more public water supplies shall be permitted only with the approval of the health authority having jurisdiction.

3.Cross-connection control. Cross-connections are prohibited except when and where, as approved by the authority having jurisdiction, suitable protective devices are installed, tested, and maintained to insure proper operation on a continuing basis.

4.Individual water supplies. Cross-connections between an individual water supply and a potable public supply shall not be made unless specifically approved by the authority having jurisdiction.

5.Toxic materials. Piping conveying potable water shall be constructed of nontoxic material.

6.Chemicals and other substances. No chemicals or other substances that could produce either toxic conditions, taste, odor, or discoloration in a potable water system shall be introduced into or used in such systems.

7.Painting of water tanks. The interior surface of a potable water tank shall not be lined, painted, or repaired with any material which will affect either the taste, odor, color, or potability of the water supply when the tank is placed in or returned to service.

8.Used piping. Piping which has been used for any other purpose than conveying potable water shall not be used for conveying potable water.

N.D. Admin. Code 62-04-07-05 Water pumping and storage equipment

1.Pumps and other appliances. Water pumps, filters, softeners, tanks, and all other appliances and devices used to handle or treat potable water shall be protected against contamination.

2.Prohibited location of potable supply tanks. Potable water gravity tanks or manholes of potable water pressure tanks shall not be located directly under any soil or waste piping.

N.D. Admin. Code 62-04-07-06 Disinfection of potable water system

New or repaired potable water systems shall be disinfected prior to use whenever required by the

authority having jurisdiction. The method to be followed shall be that prescribed by the health authority or, in case no method is prescribed by the health authority, the following:

1.The pipe system shall be flushed with clean, potable water until no dirty water appears at the points of outlet.

2.The system or part thereof shall be filled with a water-chlorine solution containing at least fifty parts per million of chlorine and the system or part thereof shall be valved off and allowed to stand for twenty-four hours.

3.The system or part thereof shall be filled with a water-chlorine solution containing at least two hundred parts per million of chlorine and allowed to stand for three hours.

4.Following the allowed standing time the system shall be flushed with clean potable water until no chlorine remains in the water coming from the system.

5.The procedure shall be repeated if it is shown by a bacteriological examination made by the

authority that contamination still persists in the system.

N.D. Admin. Code 62-04-07-07 Water supply system materials

1.Water distribution system pipe. Water distribution system pipe shall be of brass pipe, copper tube, or copper pipe, galvanized wrought iron pipe, galvanized open-hearth iron pipe, or galvanized steel pipe. Copper tube when used underground shall not be less than type L and when used above ground not less than type M.

2.Fittings. The materials of which water supply system pipe fittings are made shall conform to the type of piping materials used in the water supply system. The fittings shall have no ledges, shoulders, or reductions which can retard or obstruct flow in the piping.

3.Material strength. All materials used for water piping must be suitable for use with the maximum temperature and pressure and velocities that may be encountered in the installation, including temporary increases and surges.

N.D. Admin. Code 62-04-07-08 Water supply control valves

1.Valves in dwelling units. All water closets and kitchen sinks shall have individual fixture valves installed. Valves must also be installed for each bath, shower, powder room, or fixture group. A group of fixtures means two or more fixtures adjacent to each other in the same family unit, but not necessarily in the same room. In a one family unit, one or two bathrooms back to back or one over the other may be considered a group. However, in each dwelling unit with two or more bathroom groups not adjacent to each other, one or more control valves or individual fixture valves shall be provided so that each group may be isolated from the other.

In more than single family dwelling units, one or more control valves shall be provided so that the water to any plumbing fixture or group of fixtures in any one dwelling unit may be shut off without stopping flow of water to fixtures in other dwelling units. These valves shall be accessible inside the building unit controlled.

2.Riser valves. Except in single family dwellings a valve shall be installed at the foot of each water supply riser. In multistory buildings a valve shall be installed at the top of each water supply downfeed pipe and also at the base where required to isolate this riser for servicing.

3.Individual fixture valves. In occupied buildings other than dwellings, the water service line to each fixture or other piece of equipment shall be provided with a valve or fixture stop to shut off the water to the fixture or to the room in which it is located. Except in single family dwellings, sill cocks and wall hydrants shall be separately controlled by a valve inside the building.

4.Valve to be accessible. All water supply control valves shall be placed so as to be accessible for service and maintenance.

5.Control valve design. Except to single fixtures, control valves on all water lines shall when fully opened have a cross sectional area not less than eighty-five percent of the cross sectional area of the line in which they are installed.

N.D. Admin. Code 62-04-07-09 Water supply distribution

1.Supply demand. The supply demand in gallons per minute in the building water distributing system shall be determined on the basis of the load in terms of supply fixture units and of the relationship between load and supply demand as shown in the tables contained in subsection 2 of section 62-03-10-13.

2.Size of fixture supply. The minimum sizes of a fixture supply pipe shall be as shown in the table contained in subsection 2 of section 62-03-10-14. The fixture supply pipe shall be extended to within at least thirty inches [76.2 centimeters] of the point of connection to the fixture, and be within the same area and physical space as the point of connection to the fixture. Not more than two fixtures shall be supplied by a one-half inch [12.7 millimeter] pipe.

All future fixture connections must be considered in sizing pipe at the time of initial installation.

3.Existing installations. Pipe sizes in existing installations may be increased but shall not be decreased.

4.Minimum size inlet and outlet. The minimum size inlet and outlet piping to water softeners and water filters must be not less than the distribution pipe served. Control valves must be installed in the inlet and outlet lines. A bypass valve must be installed between the inlet and outlet line valves.

History

• History: Amended effective January 1, 1992.

Chapter 62-04-08 Water Softener Units

N.D. Admin. Code 62-04-08-01 General

1.The objective of this chapter is to provide a standard of quality, capacity, and performance for water softener units. Water softener performance is to be based upon referee tests procedures described in section 62-04-08-09.

2.A manual bypass for raw water shall be provided as part of installation connections, and a drain for regenerational effluents shall be provided as described in chapter 62-04-06.

3.The regeneration process must include no less than the following operations, although not necessarily in this sequence except for subdivision d:

a.Exchanger bed must be capable of being cleaned of filtered turbidity.

b.Regenerate with salt and rinse from exchanger bed.

c.Terminate rinse.

d.Return to service.

4.The operation under subdivision a of subsection 3 may be eliminated in softeners of upflow design. Softeners of upflow design shall not be used for water having an iron content in excess of three tenths parts per million, or a turbidity in excess of ten parts per million.

N.D. Admin. Code 62-04-08-02 Classification of water softeners

1.Manual direct salting regeneration. All operations are performed manually and dry salt is added directly into the water softener. Sufficient water is removed to make room for salt.

Termination of the rinsing process (subsection 3 of section 62-04-08-01) may be automatic.

2.Manual brine regeneration. All operations are performed manually. Brine instead of dry salt is used for regeneration.

3.Semiautomatic direct salting regeneration. All operations are performed manually except the operations under subdivision a of subsection 3 of section 62-04-08-01.

4.Automatic regeneration. All operations, including bypass of raw water supply, are performed automatically after setting timer or closing electric switch. Brine is used for regeneration. Salt is added to salt dissolving chamber or brine container as required.

5.Fully automatic regeneration. Regeneration, including bypass of raw water supply, is initiated and performed automatically. Salt storage is sufficient for multiple regenerations.

N.D. Admin. Code 62-04-08-03 Softener construction

1.Materials shall be selected for their strength and resistance to corrosion by water and brine; shall be free of objectionable color throw, taste and odor; and shall not impart toxic substances to the water.

2.Softener tanks shall be constructed for a minimum working pressure of one hundred twenty-five pounds per square inch [56.70 kilograms per 6.45 square centimeters] and a hydrostatic test pressure of two hundred pounds per square inch [90.72 kilograms per 6.45 square centimeters].

a.Tanks shall be suitably corrosion resistant as to types of material or protective mechanism. Types of materials would include corrosion resistant, or noncorrosive materials such as high nickel alloys, 18-8 stainless steel and plastics. Plastic tanks shall meet the requirements of the national sanitation foundation.

b.Mild steels are not to be used unless the interior of the tank is protected by a lining or coating such as hot dip galvanizing; organic coating; glass, ceramic or rubber lining.

Galvanized tanks shall contain not less than one and five tenths ounces [42.53 grams] of zinc per square foot [929.03 square centimeters]. If the internal coating or protective mechanism is not suitable for protecting the exterior of the tank, a suitable external protective means, such as hot dip galvanizing, porcelain enamel, or organic finish shall be used.

3.Valves, piping, and screens.

a.Valves, piping, and screens shall be constructed of suitable corrosion resistant materials.

Dissimilar metals shall be insulated or shielded when deemed necessary by the manufacturer.

b.Automatic water softeners employing electrical or hydraulic operating controls shall be of sturdy construction with durable combination valves and time clocks. They shall be constructed to minimize the possibility of admitting salt water into the house water system when the manufacturer's instructions are followed. All electrical components shall be "approved" as defined in the current National Electric Code (published by national board of fire underwriters).

c.The ion exchanger shall be of a suitable type, insoluble in water, of good durability, free from objectionable color-throw, taste, odor, and should not impart toxic substances to the water.

N.D. Admin. Code 62-04-08-04 Softener rating

1.Softener rating shall be based on grains of hardness removed (as calcium carbonate) between successive regenerations and must be related to the pounds of salt required for each regeneration.

2.The number of cubic feet, the type of ion exchanger (such as greensand, carbonaceous, siliceous gel, resin), the amount of salt required for each regeneration shall be given for each softener, and manufacturer's specified backwash, rinse, and softening flow rates in gallons per minute shall be given for each softener of downflow design. The same information with the exception of manufacturer's specified backwash rate shall be given for water softeners of upflow design.

3.Grain capacity shall be validated by actual test runs as specified on at least one size of each model. Manufacturer's test results must be correlated and extended to other sizes of the same model. Manufacturer's certified test data to be supplied when required.

N.D. Admin. Code 62-04-08-05 Field performance

1.The softener shall deliver not less than four gallons per minute [15.14 liters per minute] of soft water.

2.Pressure drop from inlet to outlet of the softener, including valving and exchanger (at manufacturer's specified softening flow rate) shall not exceed fifteen pounds per square inch [6.80 kilograms per 6.45 square centimeters].

N.D. Admin. Code 62-04-08-06 Application of equipment

1.Water analysis. A chemical analysis of the water supply, made according to accepted water analysis standards, shall be furnished with the recommendation for water conditioning equipment. For those waters containing a hardness of four hundred milligrams per liter [23 grains per gallon] and or sodium in excess of one hundred milligrams per liter (6 grains per gallon) of calcium carbonate. The compensate hardness to determine the increased amount of resin needed.

2.Capacity and sizing. To assure adequate softening capacity, the following formula may be used (based upon daily water needs per person of fifty gallons [189.27 liters]) to determine the required size of manual and semiautomatic softeners:

G x P x H x F = Softening capacity requirements in grains of hardness.

Where "G" is fifty gallons (daily needs per person).

Where "P" is the number of persons to occupy dwelling.

Where "H" is the hardness of the water supply expressed in grains per gallon, and "F" is the desired frequency of regeneration in days.

Note: G = twenty-eight gallons if water closets are not supplied with softened water.

G = twenty gallons if only hot water is to be softened.

3.The following table supplies the ratio of occupancy to the number of bedrooms within the dwelling to be used with the formula supplied in subsection 2 in determining adequate size of equipment.

Number of bedrooms 2 2 4 5 6 Estimated number of occupants 4 5 6 7 8 Total Gallons G = 50 200 250 300 350 400 Used Per G = 28 112 140 168 196 224 Day G = 20 80 100 120 140 160 Minimum number of days between regeneration (subsection 4 of section 62-04-08-02) and automatic equipment (subsection 5 of

section 62-04-08-02 1 1 1 1 1 Minimum number of days between regeneration (subsection 1 of

section 62-04-08-02) and manual and semiautomatic equipment (subsection 2 of

section 62-04-08-02) 7 7 7 7 7

a.Manual or semiautomatic water softeners having a softening capacity of less than eight hundred gallons [3028.33 liters] between each regeneration shall not be acceptable.

b.Automatic regeneration (subsection 4 of section 62-04-08-02) and fully automatic regeneration equipment (subsection 5 of section 62-04-08-02) shall in no case be sized to require regeneration more than once in any twenty-four-hour period unless acceptable provision is made to deliver soft water during the regeneration process.

4.When the water softener is to be installed on a private water supply system, attention should be directed to the capacity of the pump and well and to the operating pressure of the water system to assure proper operations and regeneration of the softener.

N.D. Admin. Code 62-04-08-07 Installation

1.Drainage. Drainage from the softener in regenerating shall discharge to the building drain through an air break or air gap, to a laundry tray, floor drain, or similar properly trapped and vented fixture or stand pipe. If a fixture is not accessible it shall be the duty of the water conditioning contractor to obtain the services of a licensed plumber to install a trapped and vented outlet.

2.Brine rinse. Installations requiring rinsing of brine through building water distribution piping shall not be acceptable.

3.Piping. Pipe used in installations shall not create a corrosive condition because of dissimilarity of metals, and shall not create more than a ten percent pressure drop in system when system operates at forty pounds per square inch [18.14 kilograms per 6.45 square centimeters] or less, and shall not create a pressure drop of more than twenty percent when system operates at a pressure of forty-one pounds per square inch [18.60 kilograms per 6.45 square centimeters] or more (when softener is operating at manufacturer's specified softening flow rate).

4.Disinfection. Disinfection of all installations shall comply with the manufacturer's instructions or the water conditioning equipment manufacturer's association's instruction.

5.Operating instructions. The manufacturer or installer shall provide and attach to, or near, the softening equipment a set of instructions for use of the owner, detailing the method of operation, regeneration, and maintenance required.

History

• History: Amended effective January 1, 1992.

N.D. Admin. Code 62-04-08-08 Warranties

1.On equipment. The manufacturer shall provide the user of the equipment with an unconditional warranty of not less than three years on the water softener tank and brine container, and the first year on all other materials and parts which may become defective.

2.On installation. Warranty replacement parts shall be furnished and installed by contractor without additional charge during the first year after date of installation. Equipment carrying a manufacturer's warranty in excess of one year shall be plainly denoted in the submission.

N.D. Admin. Code 62-04-08-09 Referee test procedures for water softening equipment

1.Water quality. Water used for test runs shall have a hardness of between fifteen and twenty grains per gallon [256.5 and 342 milligrams per liter] (as calcium carbonate), ph in range of six and nine tenths to eleven, and water temperature shall be between fifty-five degrees and sixty-five degrees Fahrenheit [12.77 and 18.33 degrees Celsius]. If unavailable in natural form, it shall be prepared to this specification in the ratio of two-thirds calcium and one-third magnesium. To determine hardness of the influent water, a constant percentage of influent water shall be collected during the test run and the composite tested for hardness by accepted water hardness test methods. (As described in the water conditioning foundation engineering manual and "Standard Methods for the Examination of Water and Waste Water", published by American public health association, 1790 Broadway, New York, New York).

2.Water softener test.

a.The softener shall be connected to water supply in accordance with manufacturer's standard installation instructions.

b.A meter shall be placed in outlet line from the softener to measure rate of flow and volume of water.

c.The softener shall operate within water pressure range and shall be regenerated in accordance with manufacturer's instructions. With softener valves in softening position, water delivered at outlet shall be tested by accepted water hardness test methods with one grain per gallon [17.1 milligrams per liter] hardness leakage as the determining end point.

3.Softening flow rate.

a.Softening capacity runs shall be at constant rate of flow at fifty percent of manufacturer's specified softening rate. This shall be considered equivalent performance to the intermittent flow obtained in the home.

b.A pressure drop test shall be made. The pressure loss from inlet to outlet of softener, including valving and exchanger at manufacturer's specified softening flow rate, shall not exceed fifteen pounds per square inch [6.80 kilograms per 6.45 square centimeters].

4.Test records.

a.Hardness of effluent shall be tested at intervals of not less than ten percent of the total softening run and shall meet test specified below.

b.Five complete softening capacity runs shall be made on each model. Data for the first two runs shall be discarded. Capacity shall be based on the average of three succeeding runs which do not show a variance of ten percent from the average.

c.Hardness test shall be one grain per gallon [17.1 milligrams per liter] of hardness leakage as the determining end point as described in accepted water hardness test procedures.

5.Softening capacity.

a.Capacity of the water softener is to be determined only between points at which hardness of effluent meets the accepted water hardness test.

b.Softening capacity rating in grains of hardness removed shall be the gallon capacity multiplied by the average hardness of the raw water as determined by a composite percentage sample required under subsection 1.

Chapter 62-04-09 Inspections

N.D. Admin. Code 62-04-09-01 Inspections

All new water conditioning installations, and such portions of existing systems as may be affected by new work or any changes, shall be inspected to ensure compliance with all the requirements of this

article and to assure that the installation and construction of the water conditioning installation is in accordance with this article and article 62-03.

N.D. Admin. Code 62-04-09-02 Notification

1.Advance notice. It shall be the duty of the holder of a water conditioning contractors license to give a notice to the administrative authority when water conditioning installation is ready for test or inspection.

2.Water conditioning contractor's responsibility. It shall be the duty of the holder of a license to make sure that the work will stand the test prescribed before giving the notification.

3.Retesting. If the administrative authority finds that the work will not pass the test, the holder of a license shall be required to make necessary corrections and the work shall then be resubmitted for test or inspection.

4.Test. Tests shall be conducted in the presence of the administrative authority or the administrative authority's duly appointed representative.

N.D. Admin. Code 62-04-09-03 Violations

Notices of violations shall be written and mailed or delivered by the administrative authority to the person responsible at the time inspection was made.

N.D. Admin. Code 62-04-09-04 Reinspections

Reinspections of water conditioning installations or any part thereof shall be made when deemed necessary by the administrative authority.

N.D. Admin. Code 62-04-09-05 Covering of work

1.Requirements. No water conditioning or water distribution system or part thereof shall be covered until it has been inspected, tested, and accepted as prescribed in this article.

2.Uncovering. If any water conditioning installation or water distribution system or part thereof which is installed, altered, or repaired, is covered before being inspected, tested, and approved, as prescribed in this article, it shall be uncovered for inspection after notice to uncover the work has been issued to the responsible person by the administrative authority.

N.D. Admin. Code 62-04-09-06 Material and labor for tests

The equipment, material, and labor necessary for inspection or tests shall be furnished by the person to whom the license is issued or by whom inspection is requested.

N.D. Admin. Code 62-04-09-07 Inspection and test not required

No test or inspection shall be required where a water conditioning system, or part thereof, is set up for exhibition purposes and has no connection with a water or drainage system.

N.D. Admin. Code 62-04-09-08 Test of water supply system

Upon completion of a section or of the entire water supply system, it shall be tested and proved tight under a water pressure not less than the working pressure under which it is to be used. The water used for tests shall be obtained from a potable source of supply.

N.D. Admin. Code 62-04-09-09 Certificate of approval

Upon the satisfactory completion and final test of the water conditioning installation, a certificate of approval shall be issued by the administrative authority to the water conditioning contractor to be delivered to the owner.

N.D. Admin. Code 62-04-09-10 Correction of defects

Wherever there is reason to believe that the water conditioning installation has become defective, it shall be subjected to test or inspection and any defects found shall be corrected as required in writing by the administrative authority.

N.D. Admin. Code 62-04-09-11 Maintenance

The water conditioning and water distribution system of any premises under the jurisdiction of the administrative authority shall be maintained in a sanitary and safe operating condition by the owner or the owner's agent.

Chapter 62-03

N.D. Admin. Code 62-03

ARTICLE 62-03

STATE PLUMBING CODE [Repealed effective March 1, 2000]