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SIAEP DU PERCHE SUD
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.18 ● (Near the limit) 0.2 – 1 0.004 ▲ Total Chlorinemg CL2/l 0.24 No limit 0.048
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 23 No limit 23 Hardnessmg CaCO3/l 367 80 – 459 367 Hardness fF 36.7 No limit 36.7 pH 7.3 6.5 – 9.5 7.3 TurbidityNTU 0.2 ≤ 4 0.02 ConductivityμS / cm 722 ≤ 2,500 722 TDSmg/l 462.1estimated 0 – 1,199 462.1 Alkalinitymg CaCO3/l 301 No limit 301 Bicarbonatemg HCO3/l 367Sampled Mar 2026 No limit 367
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0Sampled Nov 2025 ≤ 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 10Sampled Mar 2026 ≤ 50 0.5 Fluoridemg F/l 0.073Sampled Mar 2026 ≤ 1.5 0.022 Mercuryμg Hg/l 0.05Sampled Mar 2026 ≤ 1 0.005 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 13 ≤ 50 3.9
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 11Sampled Mar 2026 No limit 11 Calciummg/l 130Sampled Mar 2026 No limit 130 Potassiummg/l 2.2Sampled Mar 2026 No limit 2.2 Chloridemg/l 19 ≤ 250 19
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 2Sampled Mar 2026 ≤ 200 2 Antimonyμg/l 0.5Sampled Mar 2026 ≤ 5 0.5 Arsenicμg/l 0.25Sampled Mar 2026 ≤ 10 0.13 Bariumμg/l 12Sampled Mar 2026 ≤ 1,000 12 Cadmiumμg/l 0.025Sampled Mar 2026 ≤ 5 0.025 Chromiumμg/l 1Sampled Mar 2026 ≤ 50 1 Ironμg/l 2.9 ≤ 200 2.9 Manganeseμg/l 1Sampled Mar 2026 ≤ 50 1 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.91Sampled Mar 2026 ≤ 10 0.91 Sodiummg/l 6.7Sampled Mar 2026 ≤ 200 6.7
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.05Sampled Mar 2026 No limit 0.003 Total Trihalomethanesμg/l 9.6Sampled Mar 2026 ≤ 100 0.48
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 0Sampled Mar 2026 ≤ 60 0
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Mar 2026 ≤ 0.4 0.005 Total pesticidesug/L 0.02Sampled Mar 2026 ≤ 0.5 0.02
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 0.001Sampled Mar 2026 No limit 0.001 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 0.05 No limit 0.015 Sulfatemg/l 43 No limit 43 Uraniumug/L 0.44Sampled Mar 2026 No limit 0.44
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.
