← Back to summary See all parameters ESSAY SIAEP · Saint-Agnan-sur-Sarthe
EAUX DE NORMANDIE
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.38 0.2 – 1 0.008 ▲ Total Chlorinemg CL2/l 0.4 No limit 0.08
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 13 No limit 13 Hardnessmg CaCO3/l 344 80 – 459 344 Hardness fF 34.4 No limit 34.4 pH 7.1 6.5 – 9.5 7.1 TurbidityNTU 0.2 ≤ 4 0.02 ConductivityμS / cm 693 ≤ 2,500 693 TDSmg/l 443.5estimated 0 – 1,199 443.5 Alkalinitymg CaCO3/l 290 No limit 290 Bicarbonatemg HCO3/l 344Sampled Jun 2025 No limit 344
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 10Sampled Jun 2025 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Jun 2025 ≤ 1.5 0.015 Mercuryμg Hg/l 0.05Sampled Jun 2025 ≤ 1 0.005 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 21 ≤ 50 6.3
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 3.1Sampled Jun 2025 No limit 3.1 Calciummg/l 140Sampled Jun 2025 No limit 140 Potassiummg/l 2.4Sampled Jun 2025 No limit 2.4 Chloridemg/l 15 ≤ 250 15
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 2Sampled Jun 2025 ≤ 200 2 Arsenicμg/l 0.25Sampled Jun 2025 ≤ 10 0.13 Bariumμg/l 110Sampled Jun 2025 ≤ 1,000 110 Ironμg/l 1Sampled Jun 2025 ≤ 200 1 Manganeseμg/l 1Sampled Jun 2025 ≤ 50 1 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.5Sampled Jun 2025 ≤ 10 0.5 Sodiummg/l 6.4Sampled Jun 2025 ≤ 200 6.4
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.05Sampled Jun 2025 No limit 0.003 Total Trihalomethanesμg/l 3.12Sampled Jun 2025 ≤ 100 0.16
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jun 2025 ≤ 0.4 0.005 Total pesticidesug/L 3.55 ▲ (Outside the range) Sampled Jun 2025 ≤ 0.5 3.55 ▲
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jun 2025 ≤ 70 0.02 Atrazineug/L 0.01Sampled Jun 2025 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jun 2025 No limit 0.001 PFOSug/L 0.001Sampled Jun 2025 No limit 0.001 PFNAug/L 0.001Sampled Jun 2025 No limit 0.001 Total PFASug/L 0Sampled Jun 2025 ≤ 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 40 No limit 40
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.
