Dansmoneau.fr, an interactive map reveals the pollutants in tap water

For the past few days, the media have been highlighting the launch of Dans Mon Eau, an innovative tool that maps chemical pollutants in drinking water in France.

While tap water is generally of good quality, areas of non-compliance have been identified, particularly concerning nitrates, pesticides, and PFAS.

In this context, many households are wondering: is it worth investing in a home water treatment system?

The associations Générations Futures and Data For Good have put online an interactive map (via https://dansmoneau.fr/) that allows users to check, for any address in mainland France, the pollutants present in the distributed drinking water: pesticides, nitrates, PFAS, VCM (vinyl chloride monomer), etc. This map cross-references official sanitary control data collected over several years and highlights territorial disparities: certain areas show exceedances of regulatory quality thresholds.

The map is updated roughly every month (when new open-data sets are released). There may be a delay (1–2 months) between the displayed data and the most recent analyses performed by the Regional Health Agencies (ARS). The site also indicates regulatory quality limits but specifies that the fact that a pollutant exceeds a quality limit does not necessarily mean an immediate health risk.

The launch of Dans Mon Eau marks a turning point: citizens finally have a clear and accessible tool to understand the chemical composition of their water.

Source : https://dansmoneau.fr/ (Générations futures et Data for Good)

Why does a home water treatment system make sense?

A useful complement for certain areas

Beyond the numbers, this map highlights an important fact: tap water quality is not homogeneous across territories, and certain areas may require water treatment systems. For consumers as well as professionals, installing a suitable treatment system becomes a step toward precaution, comfort, and confidence.

When tap water contains specific pollutants (PFAS, nitrates, pesticides), appropriate equipment (reverse osmosis, high-performance activated carbon filters, selective filtration) can significantly reduce the chemical load at the tap.

Tips for choosing the right equipment

Type of targeted pollutants: Choose a system adapted to the pollutants present in your area (e.g. PFAS, nitrates, pesticides); Reverse osmosis + activated carbon prefiltration for PFAS + nitrates

Capacity / flow rate: For regular domestic use (cooking, drinking), systems with a capacity of 200–300 L/day

Ease of maintenance / operating cost: Replacement of filters, cost of cartridges; Plan a maintenance schedule.

OsmoFLOW is the ideal tool to eliminate pollutants from your domestic water supply. This reverse osmosis unit fits under a sink and connects easily to your water network to provide purified water directly from the tap. Its production of osmosis water can reach up to 370 liters per day. Its finishing cartridge adjusts taste and smell to deliver flavorful drinking water.

Gain comfort and peace of mind: OsmoFLOW is THE compact and economical solution for quality water!

And what about professionals and local authorities?

Businesses, schools, hotels, and restaurants are directly concerned by how water quality is perceived. The solutions vary:

• Industrial reverse osmosis units for sensitive uses (laboratories, hospitals, food service).

• Denitrification units or centralized activated carbon systems for internal networks.

• Connected monitoring of quality (conductivity, turbidity, pH sensors).

  These systems not only ensure compliant and reassuring water, but also help enhance the company’s environmental responsibility.

Discover our industrial systems