PFAS, Pesticides, and Chlorine: An App to See What’s in Your Water

Since March 22, 2026, the symbolic date of World Water Day, a new digital tool aims to transform our relationship with drinking water. Named EauChezMoi, this app allows anyone to access, in seconds, precise data on the quality of the water distributed in their municipality.

Tap Water: A Verification Tool to Better Understand Quality

The app rests on a simple principle. The user enters their municipality and immediately gains access to a series of detailed indicators. The data displayed cover microbiological quality, the presence of chlorine, fluoride, pesticides, or PFAS, these persistent pollutants now at the heart of health concerns, according to the Dernières Nouvelles d’Alsace(1).

This operation rests on a solid foundation. The information comes from official checks carried out by health authorities, notably the Direction générale de la santé and the regional health agencies. Until now, this information was scattered, difficult to consult, or hard to read. Now, it is centralized and translated into an accessible format.

A Quality Under Watch… but Questioned

On paper, water quality in France remains high. It is even described as “the most closely monitored food product in France,” according to the Water Information Center cited by the Dernières Nouvelles d’Alsace. Each year, nearly 18 million analyses are conducted and around 50,000 checks are performed daily.

However, this intensive surveillance no longer fully reassures. The level of trust among the French stands at 78%, but it has fallen by 7 points since 2023, according to Le Dauphiné Libéré(2). More revealing still, “nearly half of the French say they lack information, particularly about the quality of distributed water,” indicates the Kantar barometer.

This information gap appears in a context marked by the media spotlight on new contaminants. PFAS, pesticide residues, or micropollutants are raising growing concerns. Even when regulatory thresholds are met, risk perception evolves. Tap water, once a symbol of safety, becomes a topic of scrutiny.