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GAZ ET EAUX
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l Not reported 0.2 – 1 —
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 18 No limit 18 Hardnessmg CaCO3/l 235 80 – 459 235 Hardness fF 23.5 No limit 23.5 pH 7.8 6.5 – 9.5 7.8 TurbidityNTU 0.46 ≤ 4 0.046 ColorColor Units 5Sampled Nov 2025 ≤ 15 5 ConductivityμS / cm 419 ≤ 2,500 419 TDSmg/l 268.2estimated 0 – 1,199 268.2 Alkalinitymg CaCO3/l 214 No limit 214
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 Mercuryμg Hg/l Not reported ≤ 1 — Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 3.4 ≤ 50 1.02
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Chloridemg/l 2.8 ≤ 250 2.8
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Arsenicμg/l Not reported ≤ 10 — Leadμg/l Not reported ≤ 10 —
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered Total PFASug/L Not reported ≤ 0.1 — 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 6.8 No limit 6.8
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.
