Water: Acts and ordinances

Legal bases on national, european and international level

Federal Constitution

Acts and ordinances

Classified compilation: Federal law

Classified compilation: International law

Aids to enforcement

European legislation

https://www.bafu.admin.ch/content/bafu/en/home/themen/thema-wasser/wasser--rechtliche-grundlagen/wasser--gesetze-und-verordnungen.html