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SMEA ROANNAISE DE L'EAU
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.25 0.2 – 1 0.005 ▲ Total Chlorinemg CL2/l 0.35 No limit 0.07
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 27 No limit 27 Hardnessmg CaCO3/l 111.3 80 – 459 111.3 Hardness fF 11.1 No limit 11.1 pH 7.8 6.5 – 9.5 7.8 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 273 ≤ 2,500 273 TDSmg/l 174.7estimated 0 – 1,199 174.7 Alkalinitymg CaCO3/l 85.9 No limit 85.9
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 Jun 2026 ≤ 50 0.5 Fluoridemg F/l 0.09Sampled Jun 2026 ≤ 1.5 0.027 Mercuryμg Hg/l 0.5Sampled Jun 2026 ≤ 1 0.05 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 6.7 ≤ 50 2.01
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 0.8 No limit 0.8 Calciummg/l 43.2 No limit 43.2 Potassiummg/l 0.8Sampled Jun 2026 No limit 0.8 Chloridemg/l 24.7 ≤ 250 24.7
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 29Sampled Jun 2026 ≤ 200 29 Antimonyμg/l 1Sampled Jun 2026 ≤ 5 1 Arsenicμg/l 2Sampled Jun 2026 ≤ 10 1 Bariumμg/l 28Sampled Jun 2026 ≤ 1,000 28 Cadmiumμg/l 1Sampled Jun 2026 ≤ 5 1 Chromiumμg/l 5Sampled Jun 2026 ≤ 50 5 Copperμg/l 15Sampled Jun 2026 ≤ 2,000 0.75 Ironμg/l 11 ≤ 200 11 Manganeseμg/l 10Sampled Jun 2026 ≤ 50 10 Leadμg/l 2Sampled Jun 2026 ≤ 10 0.1 Nickelμg/l 5Sampled Jun 2026 ≤ 20 5 Seleniumμg/l 2Sampled Jun 2026 ≤ 10 2 Sodiummg/l 8.5Sampled Jun 2026 ≤ 200 8.5
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Jun 2026 No limit 0.005 Total Trihalomethanesμg/l 79.4Sampled Jun 2026 ≤ 100 3.97
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jun 2026 ≤ 0.4 0.005 Total pesticidesug/L 0.014Sampled Jun 2026 ≤ 0.5 0.014
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jun 2026 ≤ 70 0.02 Atrazineug/L 0.005Sampled Jun 2026 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jun 2026 No limit 0.001 PFOSug/L 0.001Sampled Jun 2026 No limit 0.001 PFNAug/L 0.001Sampled Jun 2026 No limit 0.001 Total PFASug/L 0.029Sampled Jun 2026 ≤ 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 3.5 No limit 3.5 Uraniumug/L 10Sampled Jun 2026 No limit 10
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.
