← Back to summary See all parameters GREZ EN BOUERE · Bouessay
C.C. DU PAYS DE MESLAY-GREZ
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.47 0.2 – 1 0.009 ▲ Total Chlorinemg CL2/l 0.55 No limit 0.11
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 25.6 No limit 25.6 Hardnessmg CaCO3/l 206 80 – 459 206 Hardness fF 20.6 No limit 20.6 pH 7.1 6.5 – 9.5 7.1 TurbidityNTU 0.3 ≤ 4 0.03 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 764 ≤ 2,500 764 TDSmg/l 489estimated 0 – 1,199 489 Alkalinitymg CaCO3/l 293 No limit 293 Bicarbonatemg HCO3/l 357 No limit 357
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 5 ≤ 50 0.25 Fluoridemg F/l 0.085 ≤ 1.5 0.026 Mercuryμg Hg/l 0.01 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 31 ≤ 50 9.3
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 5 No limit 5 Calciummg/l 72.6 No limit 72.6 Potassiummg/l 1.7 No limit 1.7 Chloridemg/l 34 ≤ 250 34
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 5 ≤ 200 5 Antimonyμg/l 0.1 ≤ 5 0.1 Arsenicμg/l 0.2 ≤ 10 0.1 Bariumμg/l 9 ≤ 1,000 9 Cadmiumμg/l 0.02 ≤ 5 0.02 Chromiumμg/l 0.5 ≤ 50 0.5 Copperμg/l 21Sampled Jun 2026 ≤ 2,000 1.05 Ironμg/l 11 ≤ 200 11 Manganeseμg/l 1 ≤ 50 1 Leadμg/l 2.4Sampled Jun 2026 ≤ 10 0.12 Nickelμg/l 0.5Sampled Jun 2026 ≤ 20 0.5 Seleniumμg/l 0.7 ≤ 10 0.7 Sodiummg/l 92.7 ≤ 200 92.7
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1 No limit 0.005 Total Trihalomethanesμg/l 19Sampled Jun 2026 ≤ 100 0.95
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 4.8Sampled Jun 2026 ≤ 60 0.24
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Chlordaneug/L 0 ≤ 2 0 Heptachlorug/L 0.001 ≤ 0.4 0.001 Total pesticidesug/L 0.023 ≤ 0.5 0.023
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02 ≤ 70 0.02 Atrazineug/L 0.01 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001 No limit 0.001 PFOSug/L 0.002 No limit 0.002 PFNAug/L 0.001 No limit 0.001 Total PFASug/L 0 ≤ 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 35.4 No limit 35.4 Uraniumug/L 0.3 No limit 0.3
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.
