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MAIRIE DE SAINT-CHRISTOPHE-SUR-GUIE
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.05 ● (Near the limit) Sampled Mar 2026 0.2 – 1 0.001 ▲ Total Chlorinemg CL2/l 0.05Sampled Mar 2026 No limit 0.01
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 19.5 No limit 19.5 Hardnessmg CaCO3/l 135.3Sampled Mar 2026 80 – 459 135.3 Hardness fF 13.5Sampled Mar 2026 No limit 13.5 pH 7.9Sampled Mar 2026 6.5 – 9.5 7.9 TurbidityNTU 0.32Sampled Mar 2026 ≤ 4 0.032 ColorColor Units 5Sampled Mar 2026 ≤ 15 5 ConductivityμS / cm 266Sampled Mar 2026 ≤ 2,500 266 TDSmg/l 170.2Sampled Mar 2026 estimated 0 – 1,199 170.2 Alkalinitymg CaCO3/l 132.5Sampled Mar 2026 No limit 132.5
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0Sampled Mar 2026 ≤ 0 0 eColiUFC/100ml 0Sampled Mar 2026 ≤ 0 0 BacteriasNMP/100ml 36Sampled Mar 2026 ≤ 0 3.6 EnterococcusUFC/100ml 0Sampled Mar 2026 ≤ 0 0
Chemical parameters Chemical parameters Parameter Unfiltered tap water Allowed range Filtered Mercuryμg Hg/l Not reported ≤ 1 — Nitritesmg NO2/l 0.01Sampled Mar 2026 ≤ 0.5 0.004 Nitratesmg NO3/l 1.98Sampled Mar 2026 ≤ 50 0.59
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Chloridemg/l 0.6Sampled Mar 2026 ≤ 250 0.6
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Arsenicμg/l Not reported ≤ 10 — Copperμg/l 1,290 ≤ 2,000 64.5 Leadμg/l 3 ≤ 10 0.15 Nickelμg/l 5 ≤ 20 5
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 0.01Sampled Mar 2026 No limit 0.003 Sulfatemg/l 5.8Sampled Mar 2026 No limit 5.8
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.
