Swimming has been banned in the Rhône and Arve rivers after a major sewerage discharge from a treatment plant in Annemasse.
The advice also extends to pets – dogs should not swim in the waters either.
A statement from canton Geneva says bacterial contamination is very high. Measurements were taken at the Etrembières bridge in France.
A similar problem also led to a ban of water activities in July.
The canton says there’s no risk to drinking water.
Snow triggers chaos at the Gotthard Tunnel
Fuel prices up
Calls for stricter rules for cyclists and motorbikers
Geneva to pay wine growers not to grow
US diverting Swiss defence payments
Geneva and Jura may build a joint prison
