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REGIE DES EAUX GESSIENNES
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.31 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 15.1 No limit 15.1 Hardnessmg CaCO3/l 148.3 80 – 459 148.3 Hardness fF 14.8 No limit 14.8 pH 7.9 6.5 – 9.5 7.9 TurbidityNTU 0.6 ≤ 4 0.06 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 274 ≤ 2,500 274 TDSmg/l 175.4estimated 0 – 1,199 175.4 Alkalinitymg CaCO3/l 146.5 No limit 146.5
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 4.2 ≤ 50 1.26
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 4.5 No limit 4.5 Calciummg/l 51.9 No limit 51.9 Chloridemg/l 1.7 ≤ 250 1.7
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 0.05 No limit 0.015 Sulfatemg/l 2.4 No limit 2.4
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.
