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Tap water quality, city by city, with real official data and tested guides to help you manage it daily.

Data from Hub'Eau (BRGM / French Ministry of Health), updated monthly.
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Water quality / Île-de-France

Water quality in the Île-de-France region

The Île-de-France region has 8 departments. The average water hardness is 25.8°f with an average quality score of 5.4/10. Click on a department to see the city-by-city breakdown.

Région Île-de-France

Departments by water quality

#1Essonne97 communes6.5/1026.2°fDure#2Seine-Saint-Denis40 communes6.2/1030.7°fDure#3Val-de-Marne47 communes6.2/1026.3°fDure#4Hauts-de-Seine35 communes5.5/1021°fModérément dure#5Seine-et-Marne121 communes5.1/1028.5°fDure#6Val-d'Oise71 communes4.9/1026°fDure#7Yvelines94 communes4.6/1022.4°fModérément dure#8Paris1 commune3.9/1024.9°fModérément dure

Hub'Eau data (BRGM / Ministry of Health). Quality score calculated on 5 parameters: nitrates, PFAS, pH, free chlorine, turbidity.