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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 / Bretagne

Water quality in the Bretagne region

The Bretagne region has 4 departments. The average water hardness is 14°f with an average quality score of 4.6/10. Click on a department to see the city-by-city breakdown.

Région Bretagne

Departments by water quality

#1Ille-et-Vilaine113 communes5.3/1016.9°fModérément dure#2Morbihan99 communes5.2/1013.5°fDouce#3Côtes-d'Armor72 communes4/1013.4°fDouce#4Finistère103 communes3.8/1012.3°fDouce

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