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CTE COMMUNES DU CLERMONTAIS
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.46 0.2 – 1 0.009 ▲ Total Chlorinemg CL2/l 0.51 No limit 0.1
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 21.4 No limit 21.4 Hardnessmg CaCO3/l 482.1 ● (Near the limit) 80 – 459 482.1 ● Hardness fF 48.2 No limit 48.2 pH 7.5 6.5 – 9.5 7.5 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 1,095 ≤ 2,500 1,095 TDSmg/l 700.8estimated 0 – 1,199 700.8 Alkalinitymg CaCO3/l 367 No limit 367 Bicarbonatemg HCO3/l 314Sampled Nov 2025 No limit 314
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered 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 10Sampled Nov 2025 ≤ 50 0.5 Fluoridemg F/l 0.18Sampled Nov 2025 ≤ 1.5 0.054 Mercuryμg Hg/l 0.01Sampled Nov 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 23.9 ≤ 50 7.17
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 38.6 No limit 38.6 Calciummg/l 129.3 No limit 129.3 Potassiummg/l 4.4Sampled Nov 2025 No limit 4.4 Chloridemg/l 73 ≤ 250 73
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 10Sampled Nov 2025 ≤ 200 10 Antimonyμg/l 1Sampled Aug 2025 ≤ 5 1 Arsenicμg/l 2Sampled Nov 2025 ≤ 10 1 Bariumμg/l 56Sampled Nov 2025 ≤ 1,000 56 Cadmiumμg/l 1Sampled Aug 2025 ≤ 5 1 Chromiumμg/l 5Sampled Aug 2025 ≤ 50 5 Ironμg/l 30Sampled Nov 2025 ≤ 200 30 Manganeseμg/l 10Sampled Nov 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Nov 2025 ≤ 10 2 Sodiummg/l 29.2Sampled Nov 2025 ≤ 200 29.2
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Nov 2025 No limit 0.005 Total Trihalomethanesμg/l 5.19Sampled Nov 2025 ≤ 100 0.26
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Nov 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.037Sampled Nov 2025 ≤ 0.5 0.037
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Nov 2025 ≤ 70 0.02 Atrazineug/L 0.005Sampled Nov 2025 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.002Sampled Nov 2025 No limit 0.002 PFOSug/L 0.001Sampled Nov 2025 No limit 0.001 PFNAug/L 0.001Sampled Nov 2025 No limit 0.001 Total PFASug/L 0.016Sampled Nov 2025 ≤ 0.1 0.002 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 158 No limit 158
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.
