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SMEA ROANNAISE DE L'EAU
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.08 ● (Near the limit) 0.2 – 1 0.002 ▲ Total Chlorinemg CL2/l 0.11 No limit 0.022
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 19.6 No limit 19.6 Hardnessmg CaCO3/l 103.5 80 – 459 103.5 Hardness fF 10.4 No limit 10.4 pH 8.2 6.5 – 9.5 8.2 TurbidityNTU 0.15 ≤ 4 0.015 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 271 ≤ 2,500 271 TDSmg/l 173.4estimated 0 – 1,199 173.4 Alkalinitymg CaCO3/l 95.9 No limit 95.9
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 Oct 2025 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Oct 2025 ≤ 1.5 0.015 Mercuryμg Hg/l 0.01Sampled Oct 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 6.8 ≤ 50 2.04
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 0.8 No limit 0.8 Calciummg/l 40.1 No limit 40.1 Potassiummg/l 0.8Sampled Oct 2025 No limit 0.8 Chloridemg/l 25.7 ≤ 250 25.7
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 22Sampled Oct 2025 ≤ 200 22 Arsenicμg/l 2Sampled Oct 2025 ≤ 10 1 Bariumμg/l 10Sampled Oct 2025 ≤ 1,000 10 Ironμg/l 10Sampled Oct 2025 ≤ 200 10 Manganeseμg/l 10Sampled Oct 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Oct 2025 ≤ 10 2 Sodiummg/l 7.5Sampled Oct 2025 ≤ 200 7.5
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Oct 2025 No limit 0.005 Total Trihalomethanesμg/l 8.8Sampled Oct 2025 ≤ 100 0.44
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Oct 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.005Sampled Oct 2025 ≤ 0.5 0.005
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Oct 2025 ≤ 70 0.02 Atrazineug/L 0.005Sampled Oct 2025 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Oct 2025 No limit 0.001 PFOSug/L 0.001Sampled Oct 2025 No limit 0.001 PFNAug/L 0.001Sampled Oct 2025 No limit 0.001 Total PFASug/L 0.029Sampled Oct 2025 ≤ 0.1 0.003 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 4.4 No limit 4.4
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.
