cours d'eau, étangs et lacs – Pollution des plans d'eau en Île-de-France et notamment du lac de Créteil

This written question concerns the pollution of water bodies, specifically lakes and ponds, in the Île-de-France region. It highlights the particular case of Lake Créteil and seeks information on the measures being taken to address this environmental issue. The question is directed towards understanding the current state of water quality and the actions planned or underway to protect these aquatic ecosystems and public health in the region.