Lake Créteil (Val-de-Marne) has been under surveillance since a blue-green film formed on its surface at the end of July.
These are cyanobacteria, microscopic organisms that grow in surface and stagnant fresh water, explains
Le Parisien
.
“No swimming” signs were then put up all around the lake.
They also indicate that some of its microorganisms can generate toxins that can affect the health of humans and animals.
Headaches, nausea, vomiting or skin problems may occur depending on the type of exposure to the bacteria and the concentration of the bacteria.
More paddle activity
It is also not recommended to let your dog drink in the lake or to fish.
However, a member of the Lac de Créteil collective claimed to have already seen off-leash dogs jumping into the water to catch birds.
As a precaution, paddle outings are suspended but not kayak or catamaran outings.
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