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Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 1.64 ▲ (Outside the range) 0.2 – 1 0.033 ▲ Total Chlorinemg CL2/l 1.94 No limit 0.39
General General Parameter Unfiltered tap water Allowed range Filtered Hardnessmg CaCO3/l 10 ● (Near the limit) 80 – 459 10 ● Hardness fF 1 No limit 1 pH 6.5 6.5 – 9.5 6.5 TurbidityNTU 6 ▲ (Outside the range) ≤ 4 0.6 ColorColor Units 10 ≤ 15 10 ConductivityμS / cm 34 ≤ 2,500 34 TDSmg/l 21.8estimated 0 – 1,199 21.8 Alkalinitymg CaCO3/l 20 No limit 20
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 0.05 ≤ 0.5 0.02 Nitratesmg NO3/l 1.2 ≤ 50 0.36
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Chloridemg/l 4.62 ≤ 250 4.62
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 1,006 ▲ (Outside the range) ≤ 200 1,006 ▲ Arsenicμg/l Not reported ≤ 10 — Ironμg/l 619 ▲ (Outside the range) ≤ 200 619 ▲ Manganeseμg/l 10 ≤ 50 10 Leadμg/l Not reported ≤ 10 —
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Total Trihalomethanesμg/l 35.4 ≤ 100 1.77
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 3.69 No limit 3.69
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.
