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SMEA ROANNAISE DE L'EAU
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.06 ● (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 24.2 No limit 24.2 Hardnessmg CaCO3/l 52.5 ● (Near the limit) 80 – 459 52.5 ● Hardness fF 5.25 No limit 5.25 pH 8 6.5 – 9.5 8 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 140 ≤ 2,500 140 TDSmg/l 89.6estimated 0 – 1,199 89.6 Alkalinitymg CaCO3/l 51.8 No limit 51.8
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 Jan 2026 ≤ 50 0.5 Fluoridemg F/l 0.07Sampled Jan 2026 ≤ 1.5 0.021 Mercuryμg Hg/l 0.5Sampled Jan 2026 ≤ 1 0.05 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 9.4 ≤ 50 2.82
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 0.9 No limit 0.9 Calciummg/l 19.5 No limit 19.5 Potassiummg/l 0.6Sampled Jan 2026 No limit 0.6 Chloridemg/l 5.5 ≤ 250 5.5
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 10Sampled Jan 2026 ≤ 200 10 Antimonyμg/l 1Sampled Jan 2026 ≤ 5 1 Arsenicμg/l 2Sampled Jan 2026 ≤ 10 1 Bariumμg/l 10Sampled Jan 2026 ≤ 1,000 10 Cadmiumμg/l 1Sampled Jan 2026 ≤ 5 1 Chromiumμg/l 5Sampled Jan 2026 ≤ 50 5 Copperμg/l 10Sampled Jan 2026 ≤ 2,000 0.5 Ironμg/l 10Sampled Jan 2026 ≤ 200 10 Manganeseμg/l 10Sampled Jan 2026 ≤ 50 10 Leadμg/l 2Sampled Jan 2026 ≤ 10 0.1 Nickelμg/l 5Sampled Jan 2026 ≤ 20 5 Seleniumμg/l 2Sampled Jan 2026 ≤ 10 2 Sodiummg/l 5.1Sampled Jan 2026 ≤ 200 5.1
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Jan 2026 No limit 0.005 Total Trihalomethanesμg/l 5.68Sampled Jan 2026 ≤ 100 0.28
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 0.5Sampled Jan 2026 ≤ 60 0.025
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jan 2026 ≤ 0.4 0.005 Total pesticidesug/L 0.5 ● (Near the limit) Sampled Jan 2026 ≤ 0.5 0.5 ●
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jan 2026 ≤ 70 0.02 Atrazineug/L 0.005Sampled Jan 2026 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jan 2026 No limit 0.001 PFOSug/L 0.001Sampled Jan 2026 No limit 0.001 PFNAug/L 0.001Sampled Jan 2026 No limit 0.001 Total PFASug/L 0.029Sampled Jan 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 5.4 No limit 5.4 Uraniumug/L 10Sampled Jan 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.
