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Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.1 ● (Near the limit) 0.2 – 1 0.002 ▲ Total Chlorinemg CL2/l 0.14 No limit 0.028
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 18.1 No limit 18.1 Hardnessmg CaCO3/l 94 80 – 459 94 Hardness fF 9.4 No limit 9.4 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 1.9 ≤ 4 0.19 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 268 ≤ 2,500 268 TDSmg/l 171.5estimated 0 – 1,199 171.5 Alkalinitymg CaCO3/l 85 No limit 85 Bicarbonatemg HCO3/l 82.5Sampled Oct 2025 No limit 82.5
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0Sampled Jun 2026 ≤ 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 5 ≤ 50 0.25 Fluoridemg F/l 0.08 ≤ 1.5 0.024 Mercuryμg Hg/l 0.01 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 8.2 ≤ 50 2.46
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 2.7 No limit 2.7 Calciummg/l 33.6 No limit 33.6 Potassiummg/l 2.6 No limit 2.6 Chloridemg/l 28.7 ≤ 250 28.7
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 30.1 ≤ 200 30.1 Antimonyμg/l 0.1 ≤ 5 0.1 Arsenicμg/l 0.48 ≤ 10 0.24 Bariumμg/l 27.4 ≤ 1,000 27.4 Cadmiumμg/l 0.032 ≤ 5 0.032 Chromiumμg/l 0.1 ≤ 50 0.1 Ironμg/l 10.1 ≤ 200 10.1 Manganeseμg/l 1 ≤ 50 1 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.1 ≤ 10 0.1 Sodiummg/l 13.3 ≤ 200 13.3
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.5Sampled Oct 2025 No limit 0.025 Total Trihalomethanesμg/l 13.7Sampled Oct 2025 ≤ 100 0.69
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.01 ≤ 0.4 0.01 Total pesticidesug/L 0 ≤ 0.5 0
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02 ≤ 70 0.02 Atrazineug/L 0.02 ≤ 3 0.02
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001 No limit 0.001 PFOSug/L 0.002 No limit 0.002 PFNAug/L 0.001 No limit 0.001 Total PFASug/L 0 ≤ 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 5.5 No limit 5.5 Uraniumug/L 0.1 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.
