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Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.18 ● (Near the limit) 0.2 – 1 0.004 ▲ Total Chlorinemg CL2/l 0.27 No limit 0.054
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 25.6 No limit 25.6 Hardnessmg CaCO3/l 111 80 – 459 111 Hardness fF 11.1 No limit 11.1 pH 8 6.5 – 9.5 8 TurbidityNTU 0.22 ≤ 4 0.022 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 370 ≤ 2,500 370 TDSmg/l 236.8estimated 0 – 1,199 236.8 Alkalinitymg CaCO3/l 69 No limit 69
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 5Sampled Jun 2026 ≤ 50 0.25 Fluoridemg F/l 0.09Sampled Jun 2026 ≤ 1.5 0.027 Mercuryμg Hg/l 0.01Sampled Jun 2026 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 2.7 ≤ 50 0.81
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 3Sampled Jun 2026 No limit 3 Calciummg/l 48.5Sampled Jun 2026 No limit 48.5 Potassiummg/l 3.1Sampled Jun 2026 No limit 3.1 Chloridemg/l 61.1 ≤ 250 61.1
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 2.3Sampled Jun 2026 ≤ 200 2.3 Antimonyμg/l 0.1Sampled Jun 2026 ≤ 5 0.1 Arsenicμg/l 0.22Sampled Jun 2026 ≤ 10 0.11 Bariumμg/l 31Sampled Jun 2026 ≤ 1,000 31 Cadmiumμg/l 0.025Sampled Jun 2026 ≤ 5 0.025 Chromiumμg/l 0.17Sampled Jun 2026 ≤ 50 0.17 Ironμg/l 5.1 ≤ 200 5.1 Manganeseμg/l 3.7 ≤ 50 3.7 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.1Sampled Jun 2026 ≤ 10 0.1 Sodiummg/l 25.6Sampled Jun 2026 ≤ 200 25.6
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Total Trihalomethanesμg/l 29.1 ≤ 100 1.46
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.01Sampled Jun 2026 ≤ 0.4 0.01 Total pesticidesug/L 0.069Sampled Jun 2026 ≤ 0.5 0.069
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jun 2026 ≤ 70 0.02 Atrazineug/L 0.02Sampled Jun 2026 ≤ 3 0.02
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jun 2026 No limit 0.001 PFOSug/L 0.002Sampled Jun 2026 No limit 0.002 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 19.5 No limit 19.5 Uraniumug/L 0.1Sampled Jun 2026 No limit 0.1
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.
