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SI SEMENE
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.03 ▲ (Outside the range) 0.2 – 1 0.001 ▲ Total Chlorinemg CL2/l 0.03 No limit 0.006
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 22.4 No limit 22.4 Hardnessmg CaCO3/l 90.7 80 – 459 90.7 Hardness fF 9.07 No limit 9.07 pH 7.1 6.5 – 9.5 7.1 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 293 ≤ 2,500 293 TDSmg/l 187.5estimated 0 – 1,199 187.5 Alkalinitymg CaCO3/l 27.1 No limit 27.1
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 2.4 ≤ 50 0.72
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 1.7 No limit 1.7 Calciummg/l 33.5 No limit 33.5 Chloridemg/l 67 ≤ 250 67
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Antimonyμg/l 1Sampled May 2025 ≤ 5 1 Arsenicμg/l Not reported ≤ 10 — Cadmiumμg/l 1Sampled May 2025 ≤ 5 1 Chromiumμg/l 5Sampled May 2025 ≤ 50 5 Ironμg/l 22 ≤ 200 22 Leadμg/l Not reported ≤ 10 —
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Total Trihalomethanesμg/l 22.6 ≤ 100 1.13
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 6.6 No limit 6.6
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.
