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Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.28 0.2 – 1 0.006 ▲ Total Chlorinemg CL2/l 0.3 No limit 0.06
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 22 No limit 22 Hardnessmg CaCO3/l 275 80 – 459 275 Hardness fF 27.5 No limit 27.5 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 0.47 ≤ 4 0.047 ConductivityμS / cm 542 ≤ 2,500 542 TDSmg/l 346.9estimated 0 – 1,199 346.9 Alkalinitymg CaCO3/l 208 No limit 208 Bicarbonatemg HCO3/l 277Sampled Jun 2026 No limit 277
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 0.1Sampled Jun 2026 ≤ 1.5 0.03 Mercuryμg Hg/l 0.015Sampled Jun 2026 ≤ 1 0.002 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 22.5 ≤ 50 6.75
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 4.21Sampled Jun 2026 No limit 4.21 Calciummg/l 103.5Sampled Jun 2026 No limit 103.5 Potassiummg/l 1.7Sampled Jun 2026 No limit 1.7 Chloridemg/l 28.6 ≤ 250 28.6
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 4Sampled Jun 2026 ≤ 200 4 Antimonyμg/l 0.5Sampled Jun 2026 ≤ 5 0.5 Arsenicμg/l 0.25Sampled Jun 2026 ≤ 10 0.13 Bariumμg/l 21.9Sampled Jun 2026 ≤ 1,000 21.9 Cadmiumμg/l 0.025Sampled Jun 2026 ≤ 5 0.025 Chromiumμg/l 0.5Sampled Jun 2026 ≤ 50 0.5 Ironμg/l 11Sampled Jun 2026 ≤ 200 11 Manganeseμg/l 0.5Sampled Jun 2026 ≤ 50 0.5 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.5Sampled Jun 2026 ≤ 10 0.5 Sodiummg/l 11.8Sampled Jun 2026 ≤ 200 11.8
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.05Sampled Jun 2026 No limit 0.003 Total Trihalomethanesμg/l 10Sampled Jun 2026 ≤ 100 0.5
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 0Sampled Jun 2026 ≤ 60 0
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jun 2026 ≤ 0.4 0.005 Total pesticidesug/L 0Sampled Jun 2026 ≤ 0.5 0
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jun 2026 ≤ 70 0.02 Atrazineug/L 0.01Sampled Jun 2026 ≤ 3 0.01
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 0Sampled Jun 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 0.01 No limit 0.003 Sulfatemg/l 11.4 No limit 11.4 Uraniumug/L 0.37Sampled Jun 2026 No limit 0.37
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.
