What are cyanobacteria, responsible for the closure of water bodies in Ile-de-France?

ENVIRONMENT – Cyanobacteria are increasingly controlled in the face of the danger they represent when they proliferate too much, especially in certain bodies of water in Ile-de-France, which have had to close nautical activities to the public

They have a funny fluorescent color, between green and blue, which delights photographers, but the misfortune of health authorities: cyanobacteria, these microorganisms that look like algae, have caused the closure of several points in recent weeks. of water in Ile-de-France. What risks do we incur if we swim in water that contains a large number of them? Are these filaments expanding in Ile-de-France and what is their development due to? We made the point.

Where are cyanobacteria present in Ile-de-France?

Nearly three quarters of the bodies of water in Ile-de-France have cyanobacteria, but most have them in limited quantities, which are dangerous neither for humans nor for animals. It is when their presence is too strong that we are obliged to take measures. Like what happened on the lake of Créteil, where paddle and windsurfing were suspended. Triathlon has also been banned at the Paris-Val de Marne Interdepartmental Sports Park since samples from the Regional Health Agency (ARS) were taken on July 31.

The Yvelines are also apparently very affected since swimming and nautical activities are inter(…) Read more about 20minutes

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