← Back to summary See all parameters BOUESSAY · Bierné-les-Villages
C.C. DU PAYS DE MESLAY-GREZ
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.44 0.2 – 1 0.009 ▲ Total Chlorinemg CL2/l 0.45 No limit 0.09
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 14 No limit 14 Hardnessmg CaCO3/l 222 80 – 459 222 Hardness fF 22.2 No limit 22.2 pH 7.5 6.5 – 9.5 7.5 TurbidityNTU 0.3 ≤ 4 0.03 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 1,040 ≤ 2,500 1,040 TDSmg/l 665.6estimated 0 – 1,199 665.6 Alkalinitymg CaCO3/l 218 No limit 218 Bicarbonatemg HCO3/l 266 No limit 266
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0 ≤ 0 0 eColiUFC/100ml 0 ≤ 0 0 BacteriasNMP/100ml 0 ≤ 0 0 EnterococcusUFC/100ml 0 ≤ 0 0
Chemical parameters Chemical parameters Parameter Unfiltered tap water Allowed range Filtered Cyanide totalμg CN/l 5Sampled Mar 2026 ≤ 50 0.25 Fluoridemg F/l 0.065Sampled Mar 2026 ≤ 1.5 0.02 Mercuryμg Hg/l 0.01Sampled Mar 2026 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 27 ≤ 50 8.1
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 5.5 No limit 5.5 Calciummg/l 76.7 No limit 76.7 Potassiummg/l 3.2 No limit 3.2 Chloridemg/l 185 ≤ 250 185
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 5Sampled Mar 2026 ≤ 200 5 Antimonyμg/l 0.1Sampled Mar 2026 ≤ 5 0.1 Arsenicμg/l 0.2Sampled Jun 2026 ≤ 10 0.1 Bariumμg/l 11Sampled Mar 2026 ≤ 1,000 11 Cadmiumμg/l 0.026Sampled Mar 2026 ≤ 5 0.026 Chromiumμg/l 0.4Sampled Mar 2026 ≤ 50 0.4 Ironμg/l 7Sampled Mar 2026 ≤ 200 7 Manganeseμg/l 0.5Sampled Mar 2026 ≤ 50 0.5 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.2Sampled Mar 2026 ≤ 10 0.2 Sodiummg/l 121 ≤ 200 121
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Mar 2026 No limit 0.005
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Chlordaneug/L 0Sampled Mar 2026 ≤ 2 0 Heptachlorug/L 0.001Sampled Mar 2026 ≤ 0.4 0.001 Total pesticidesug/L 0.024Sampled Mar 2026 ≤ 0.5 0.024
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Mar 2026 ≤ 70 0.02 Atrazineug/L 0.01Sampled Mar 2026 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Mar 2026 No limit 0.001 PFOSug/L 0.002Sampled Mar 2026 No limit 0.002 PFNAug/L 0.001Sampled Mar 2026 No limit 0.001 Total PFASug/L 0Sampled Mar 2026 ≤ 0.1 0 PFAS 4ng/l Not reported No limit — PFAS 21ng/l Not reported No limit —
Other Other Parameter Unfiltered tap water Allowed range Filtered Ammoniamg/l 0.01 No limit 0.003 Sulfatemg/l 9.39 No limit 9.39 Uraniumug/L 0.2Sampled Mar 2026 No limit 0.2
Data from the French health inspection of drinking water (Ministry of Health, regional health agencies), per distribution unit. Quality ranges are based on WHO guidelines, EU Directive 2020/2184 and the French public health code.
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Data from the French health inspection of drinking water (Ministry of Health, regional health agencies), per distribution unit. Quality ranges are based on WHO guidelines, EU Directive 2020/2184 and the French public health code.
