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SIAEP DU PERCHE SUD
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.07 ● (Near the limit) 0.2 – 1 0.001 ▲ Total Chlorinemg CL2/l 0.09 No limit 0.018
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 22Sampled Jul 2026 No limit 22 Hardnessmg CaCO3/l 252Sampled Jul 2026 80 – 459 252 Hardness fF 25.2Sampled Jul 2026 No limit 25.2 pH 7.7Sampled Jul 2026 6.5 – 9.5 7.7 TurbidityNTU 0.41 ≤ 4 0.041 ConductivityμS / cm 488Sampled Jul 2026 ≤ 2,500 488 TDSmg/l 312.3Sampled Jul 2026 estimated 0 – 1,199 312.3 Alkalinitymg CaCO3/l 200Sampled Jul 2026 No limit 200 Bicarbonatemg HCO3/l 250Sampled Apr 2026 No limit 250
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0Sampled Sept 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 Apr 2026 ≤ 50 0.5 Fluoridemg F/l 0.078Sampled Apr 2026 ≤ 1.5 0.023 Mercuryμg Hg/l 0.05Sampled Apr 2026 ≤ 1 0.005 Nitritesmg NO2/l 0.01Sampled Jul 2026 ≤ 0.5 0.004 Nitratesmg NO3/l 5.5Sampled Jul 2026 ≤ 50 1.65
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 6.7Sampled Apr 2026 No limit 6.7 Calciummg/l 83Sampled Apr 2026 No limit 83 Potassiummg/l 1.5Sampled Apr 2026 No limit 1.5 Chloridemg/l 17Sampled Jul 2026 ≤ 250 17
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 2.2Sampled Apr 2026 ≤ 200 2.2 Antimonyμg/l 0.5Sampled Apr 2026 ≤ 5 0.5 Arsenicμg/l 0.25Sampled Apr 2026 ≤ 10 0.13 Bariumμg/l 19Sampled Apr 2026 ≤ 1,000 19 Cadmiumμg/l 0.025Sampled Apr 2026 ≤ 5 0.025 Chromiumμg/l 1Sampled Apr 2026 ≤ 50 1 Ironμg/l 59.4Sampled Jul 2026 ≤ 200 59.4 Manganeseμg/l 1Sampled Apr 2026 ≤ 50 1 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.84Sampled Apr 2026 ≤ 10 0.84 Sodiummg/l 8.5Sampled Apr 2026 ≤ 200 8.5
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.05Sampled Apr 2026 No limit 0.003 Total Trihalomethanesμg/l 9.5Sampled Apr 2026 ≤ 100 0.48
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 1.51Sampled Apr 2026 ≤ 60 0.076
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Apr 2026 ≤ 0.4 0.005 Total pesticidesug/L 0Sampled Apr 2026 ≤ 0.5 0
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Apr 2026 ≤ 70 0.02 Atrazineug/L 0.01Sampled Apr 2026 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Apr 2026 No limit 0.001 PFOSug/L 0.001Sampled Apr 2026 No limit 0.001 PFNAug/L 0.001Sampled Apr 2026 No limit 0.001 Total PFASug/L 0Sampled Apr 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 0.05Sampled Jul 2026 No limit 0.015 Sulfatemg/l 25Sampled Jul 2026 No limit 25 Uraniumug/L 0.11Sampled Apr 2026 No limit 0.11
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.
