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SIAEP KARST DE LA CHARENTE
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.79 0.2 – 1 0.016 ▲ Total Chlorinemg CL2/l 0.83 No limit 0.17
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 20.7 No limit 20.7 Hardnessmg CaCO3/l 298 80 – 459 298 Hardness fF 29.8 No limit 29.8 pH 7.3 6.5 – 9.5 7.3 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 597 ≤ 2,500 597 TDSmg/l 382.1estimated 0 – 1,199 382.1 Alkalinitymg CaCO3/l 314 No limit 314 Bicarbonatemg HCO3/l 359.9Sampled Jun 2025 No limit 359.9
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0Sampled Jun 2026 ≤ 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 Cyanide totalμg CN/l 5 ≤ 50 0.25 Fluoridemg F/l 0.09 ≤ 1.5 0.027 Mercuryμg Hg/l 0.01 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 22.7 ≤ 50 6.81
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 9 No limit 9 Calciummg/l 111.9 No limit 111.9 Potassiummg/l 1.1 No limit 1.1 Chloridemg/l 11.7 ≤ 250 11.7
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 8.1 ≤ 200 8.1 Antimonyμg/l 0.1 ≤ 5 0.1 Arsenicμg/l 0.24 ≤ 10 0.12 Bariumμg/l 20 ≤ 1,000 20 Cadmiumμg/l 0.025 ≤ 5 0.025 Chromiumμg/l 0.37 ≤ 50 0.37 Ironμg/l 1 ≤ 200 1 Manganeseμg/l 1 ≤ 50 1 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.65 ≤ 10 0.65 Sodiummg/l 5.8 ≤ 200 5.8
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.5Sampled Jun 2025 No limit 0.025 Total Trihalomethanesμg/l 2.5Sampled Sept 2025 ≤ 100 0.13
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.01 ≤ 0.4 0.01 Total pesticidesug/L 0.059 ≤ 0.5 0.059
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02 ≤ 70 0.02 Atrazineug/L 0.02 ≤ 3 0.02
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001 No limit 0.001 PFOSug/L 0.002 No limit 0.002 PFNAug/L 0.001 No limit 0.001 Total PFASug/L 0 ≤ 0.1 0 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 10.6 No limit 10.6 Uraniumug/L 0.62 No limit 0.62
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.
