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MAIRIE DE MARS
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.06 ● (Near the limit) 0.2 – 1 0.001 ▲ Total Chlorinemg CL2/l 0.08 No limit 0.016
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 20.6 No limit 20.6 Hardnessmg CaCO3/l 22.3 ● (Near the limit) 80 – 459 22.3 ● Hardness fF 2.23 No limit 2.23 pH 6.7 6.5 – 9.5 6.7 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 65 ≤ 2,500 65 TDSmg/l 41.6estimated 0 – 1,199 41.6 Alkalinitymg CaCO3/l 23.5 No limit 23.5
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0Sampled Jun 2025 ≤ 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 3.2 ≤ 50 0.96
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 1.6 No limit 1.6 Calciummg/l 6.3 No limit 6.3 Chloridemg/l 2.7 ≤ 250 2.7
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 0.01 No limit 0.003 Sulfatemg/l 2.6 No limit 2.6
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.
