← Back to summary See all parameters ST MARTIN LA PLAINE RIVE GIER · Chagnon
CHOLTON S.A.
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.05 ● (Near the limit) 0.2 – 1 0.001 ▲ Total Chlorinemg CL2/l 0.11 No limit 0.022
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 11.5 No limit 11.5 Hardnessmg CaCO3/l Not reported 80 – 459 — pH 8.1 6.5 – 9.5 8.1 TurbidityNTU 0.11Sampled Nov 2025 ≤ 4 0.011 ColorColor Units 5Sampled Nov 2025 ≤ 15 5 ConductivityμS / cm 256Sampled Nov 2025 ≤ 2,500 256 TDSmg/l 163.8Sampled Nov 2025 estimated 0 – 1,199 163.8
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0Sampled Nov 2025 ≤ 0 0 eColiUFC/100ml 0Sampled Nov 2025 ≤ 0 0 BacteriasNMP/100ml 0Sampled Nov 2025 ≤ 0 0 EnterococcusUFC/100ml 0Sampled Nov 2025 ≤ 0 0
Chemical parameters Chemical parameters Parameter Unfiltered tap water Allowed range Filtered Mercuryμg Hg/l Not reported ≤ 1 — Nitritesmg NO2/l 0.02Sampled Jul 2025 ≤ 0.5 0.008 Nitratesmg NO3/l 4.5Sampled Jul 2025 ≤ 50 1.35
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Antimonyμg/l 1Sampled Jul 2025 ≤ 5 1 Arsenicμg/l Not reported ≤ 10 — Cadmiumμg/l 1Sampled Jul 2025 ≤ 5 1 Chromiumμg/l 5Sampled Jul 2025 ≤ 50 5 Ironμg/l 25Sampled Nov 2025 ≤ 200 25 Leadμg/l Not reported ≤ 10 —
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Oct 2025 No limit 0.005 Total Trihalomethanesμg/l 34.5 ≤ 100 1.73
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 0.05Sampled Nov 2025 No limit 0.015
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.
