Long considered an environmental benchmark, Lake Annecy is now revealing widespread contamination linked to road traffic. An investigation released by France Nature Environnement highlights the presence of chemical substances from tire abrasion in the water, sediments, ambient air, and even in the bodies of local residents.
Chemical traces even in drinking water
Analyses conducted around and within the lake identified several additives used in tire manufacturing, some of which are known to be toxic. These compounds were found in surface water, deep water, rainwater near roads, and even in tap water, as the lake is a major local water source.
According to association leaders, these results illustrate a largely underestimated phenomenon, one that is likely to affect far beyond Haute-Savoie. They are now calling for upstream action, by limiting traffic-related emissions and strengthening filtration systems, in the face of what they describe as massive and widespread pollution.
