SWIMMING IN THE LEMAN: Beware of cyanobacteria

With hot spells, the risk of cyanobacteria proliferation in lakes and lakeshores increases.

Caution should be exercised in the event of the appearance of this natural and unpredictable phenomenon, which takes the form of trails or spongy, sticky mats on the surface of the water, giving it an unusual color.

Some species produce toxins which, if ingested, can kill dogs. They can also cause intoxication in humans, with symptoms ranging from stomach ache to flu and skin irritation.

Swimming is temporarily prohibited near the mouth of the Eau-Froide at Villeneuve. To date, this is the only site where toxic cyanobacteria have been detected in Lake Geneva, but we must remain vigilant.

A few precautions will help you enjoy the beaches with peace of mind:

• Do not swim in areas covered with algae or deposits;
• Respect swimming bans;
• Swim only in designated areas;
• Avoid swallowing water;
• Supervise young children so they don't drink lake water or put pebbles from the beach in their mouths;
• In the event of suspected poisoning, contact the attending physician or the on-call physician hotline on 0848 133 133 ;
• Do not allow animals to drink or bathe in stagnant water or water with surface deposits;
• Shower after swimming and dry off thoroughly.

Further information: link

Photo credit: Etat de Vaud