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GBA - REGIE DE L'EAU
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.29 0.2 – 1 0.006 ▲ Total Chlorinemg CL2/l 0.34 No limit 0.068
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 23.1 No limit 23.1 Hardnessmg CaCO3/l 139.5 80 – 459 139.5 Hardness fF 14 No limit 14 pH 7.9 6.5 – 9.5 7.9 TurbidityNTU 0.48 ≤ 4 0.048 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 290 ≤ 2,500 290 TDSmg/l 185.6estimated 0 – 1,199 185.6 Alkalinitymg CaCO3/l 147 No limit 147
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 Jul 2025 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Jul 2025 ≤ 1.5 0.015 Mercuryμg Hg/l 0.01Sampled Jul 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 7.7 ≤ 50 2.31
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 1.1 No limit 1.1 Calciummg/l 54 No limit 54 Potassiummg/l 0.1Sampled Jul 2025 No limit 0.1 Chloridemg/l 3.5 ≤ 250 3.5
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 18Sampled Jul 2025 ≤ 200 18 Arsenicμg/l 2Sampled Jul 2025 ≤ 10 1 Bariumμg/l 10Sampled Jul 2025 ≤ 1,000 10 Ironμg/l 10Sampled Jul 2025 ≤ 200 10 Manganeseμg/l 10Sampled Jul 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Jul 2025 ≤ 10 2 Sodiummg/l 1.9Sampled Jul 2025 ≤ 200 1.9
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Jul 2025 No limit 0.005 Total Trihalomethanesμg/l 6.98Sampled Jul 2025 ≤ 100 0.35
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jul 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.23Sampled Jul 2025 ≤ 0.5 0.23
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jul 2025 ≤ 70 0.02 Atrazineug/L 0.005Sampled Jul 2025 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jul 2025 No limit 0.001 PFOSug/L 0.001Sampled Jul 2025 No limit 0.001 PFNAug/L 0.001Sampled Jul 2025 No limit 0.001 Total PFASug/L 0.029Sampled Jul 2025 ≤ 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 4.8 No limit 4.8
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.
