Damaged sewerage plants could lead to pollution in Lake Geneva.
Several plants in canton Valais are currently out of action due to flooding, locals are being told to flush the toilet as little as possible, throw toilet paper in the bin and use kitchen towels to clean pots and pans.
One of the works in the town of Siders has been effectively destroyed and needs to be rebuilt.
If sewerage can’t be properly treated, there’s no option other to allow waste to flow into the Rhone – which leads into the lake.
As repairs will take some time, the risk of pollution will last for several weeks.
Meanwhile, Valais authorities have evacuated two villages and a campsite in the Val de Bagnes due to heavy rain and fears of a landslide.
Access to the area is forbidden.
The occasional challenges of living in a multi-lingual country were clear yesterday. The Alert Swiss app sent a message warning of ‘flowing lava.’
Switzerland relies too heavily on an American NGO to detect child sexual abuse online, raising questions about the country's ability to protect children on its own.
Summer has arrived, with temperatures climbing past 30 over the long weekend. Basel reached 31 and Sion hit 32.4, but MeteoSwiss, says this does not yet count as an official heatwave.