814.201WPOFederal Council OrdinanceJan 1, 1999Original source
The persons responsible for wastewater treatment plants that discharge wastewater into a body of water and persons responsible for enterprises who discharge industrial wastewater into a wastewater treatment plant must take appropriate and economically acceptable measures to reduce the risk of pollution of a body of water arising from exceptional events.
If in spite of these measures the risk is unacceptable, the authorities shall order the necessary additional measures.
Regulations in the Major Accidents Ordinance of 27 February 19911and the Ordinance of 20 November 19912on the Guarantee of Drinking Water Supplies in Emergencies that go further are reserved.