Swiss lawmakers push for clearer tap water quality transparency

Switzerland's National Council has voted in favour of greater transparency in drinking water. The motion, backed by 122 votes to 56, aims to give consumers clearer details about tap water quality and origin. Supporters argue this will build trust and reduce reliance on bottled water.

The Federal Council has also endorsed the proposal, though it still requires approval from the Council of States

Green Party member Sophie Michaud Gigon (Greens/VD) led the push for better disclosure. She cited a 2024 study showing only 10 percent of water suppliers fully met their legal transparency obligations. Michaud Gigon argued that clearer information—such as treatment methods, water hardness, and quality—would encourage more people to drink tap water instead of buying bottled alternatives.

Interior Minister Élisabeth Baume-Schneider acknowledged the study's findings. She confirmed that many suppliers were failing to provide the required details, reinforcing the need for stricter compliance. Opposition came from Katja Riem (SVP/BE), who claimed that most suppliers already shared sufficient information. She warned against focusing on perceived rather than real risks in water quality. Despite her objections, the motion passed with strong support. The Federal Council has given its backing, but the proposal must now go before the Council of States for final approval

If approved by the Council of States, the new rules will require water suppliers to provide more detailed public information. Consumers will gain better access to data on water origin, treatment, and quality. The changes aim to improve trust in tap water and reduce unnecessary bottled water consumption