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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 0.11 No limit 0.022
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 19 No limit 19 Hardnessmg CaCO3/l 277 80 – 459 277 Hardness fF 27.7 No limit 27.7 pH 7.5 6.5 – 9.5 7.5 TurbidityNTU 0.3 ≤ 4 0.03 ConductivityμS / cm 551 ≤ 2,500 551 TDSmg/l 352.6estimated 0 – 1,199 352.6 Alkalinitymg CaCO3/l 207 No limit 207
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 27 ≤ 50 8.1
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Chloridemg/l 27.9 ≤ 250 27.9
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Antimonyμg/l 0.5Sampled Sept 2025 ≤ 5 0.5 Arsenicμg/l Not reported ≤ 10 — Cadmiumμg/l 0.1Sampled Sept 2025 ≤ 5 0.1 Chromiumμg/l 0.51Sampled Sept 2025 ≤ 50 0.51 Ironμg/l 5.6Sampled Sept 2025 ≤ 200 5.6 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 12.3 No limit 12.3
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.
