← Back to summary See all parameters CHATEAU-GONTIER OUEST SUD ET ST FORT · Chemazé
CC DU PAYS DE CRAON
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.68 0.2 – 1 0.014 ▲ Total Chlorinemg CL2/l 0.69 No limit 0.14
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 22.3 No limit 22.3 Hardnessmg CaCO3/l 136 80 – 459 136 Hardness fF 13.6 No limit 13.6 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 0.3 ≤ 4 0.03 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 500 ≤ 2,500 500 TDSmg/l 320estimated 0 – 1,199 320 Alkalinitymg CaCO3/l 103 No limit 103 Bicarbonatemg HCO3/l 114Sampled Jun 2026 No limit 114
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 Jun 2026 ≤ 50 0.25 Fluoridemg F/l 0.057Sampled Jun 2026 ≤ 1.5 0.017 Mercuryμg Hg/l 0.01Sampled Jun 2026 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 5.6 ≤ 50 1.68
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 7.3Sampled Jun 2026 No limit 7.3 Calciummg/l 44Sampled Jun 2026 No limit 44 Potassiummg/l 4.8Sampled Jun 2026 No limit 4.8 Chloridemg/l 75.4 ≤ 250 75.4
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 5Sampled Jun 2026 ≤ 200 5 Antimonyμg/l 0.14Sampled Jun 2026 ≤ 5 0.14 Arsenicμg/l 0.2Sampled Jun 2026 ≤ 10 0.1 Bariumμg/l 21Sampled Jun 2026 ≤ 1,000 21 Cadmiumμg/l 0.02Sampled Jun 2026 ≤ 5 0.02 Chromiumμg/l 0.6Sampled Jun 2026 ≤ 50 0.6 Copperμg/l 5.6Sampled Oct 2025 ≤ 2,000 0.28 Ironμg/l 6 ≤ 200 6 Manganeseμg/l 0.5 ≤ 50 0.5 Leadμg/l 0.2Sampled Oct 2025 ≤ 10 0.01 Nickelμg/l 1.1Sampled Oct 2025 ≤ 20 1.1 Seleniumμg/l 0.2Sampled Jun 2026 ≤ 10 0.2 Sodiummg/l 30.2Sampled Jun 2026 ≤ 200 30.2
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Jun 2026 No limit 0.005 Total Trihalomethanesμg/l 19Sampled Dec 2025 ≤ 100 0.95
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Chlordaneug/L 0Sampled Jun 2026 ≤ 2 0 Heptachlorug/L 0.001Sampled Jun 2026 ≤ 0.4 0.001 Total pesticidesug/L 0Sampled Jun 2026 ≤ 0.5 0
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jun 2026 ≤ 70 0.02 Atrazineug/L 0.01Sampled Jun 2026 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jun 2026 No limit 0.001 PFOSug/L 0.002Sampled Jun 2026 No limit 0.002 PFNAug/L 0.001Sampled Jun 2026 No limit 0.001 Total PFASug/L 0.012Sampled Jun 2026 ≤ 0.1 0.001 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 20.8 No limit 20.8 Uraniumug/L 0.04Sampled Jun 2026 No limit 0.04
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.
