Question juridique clé
Whether the municipality could charge higher water use fees to non-residents than to residents.
Solution extraite
No. Under cantonal law, water connection and usage fees must be set to cover the costs of the supply system; a higher usage fee for non-residents is not justified.
Motifs extraits
The cantonal planning and building legislation and the related ordinance require cost-covering fees. Municipalities have no autonomy to design such charges contrary to the statutory cost-covering principle. Differentiation by residence is therefore incompatible with the higher-law framework and need not be tested separately under equality principles.