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CA LOIRE FOREZ AGGLOMÉRATION
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.17 ● (Near the limit) 0.2 – 1 0.003 ▲ Total Chlorinemg CL2/l 0.26 No limit 0.052
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 13.9 No limit 13.9 Hardnessmg CaCO3/l 38.9 ● (Near the limit) 80 – 459 38.9 ● Hardness fF 3.89 No limit 3.89 pH 6.7 6.5 – 9.5 6.7 TurbidityNTU 0.27 ≤ 4 0.027 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 153 ≤ 2,500 153 TDSmg/l 97.9estimated 0 – 1,199 97.9 Alkalinitymg CaCO3/l 29 No limit 29
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 Cyanide totalμg CN/l 10Sampled Jun 2025 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Jun 2025 ≤ 1.5 0.015 Mercuryμg Hg/l 0.01Sampled Jun 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.02 ≤ 0.5 0.008 Nitratesmg NO3/l 5.7 ≤ 50 1.71
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 2.8Sampled Jun 2025 No limit 2.8 Calciummg/l 11.6Sampled Jun 2025 No limit 11.6 Potassiummg/l 1.7Sampled Jun 2025 No limit 1.7 Chloridemg/l 20 ≤ 250 20
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 25Sampled Jun 2025 ≤ 200 25 Arsenicμg/l 3Sampled Jun 2025 ≤ 10 1.5 Bariumμg/l 25Sampled Jun 2025 ≤ 1,000 25 Ironμg/l 67Sampled Jun 2025 ≤ 200 67 Manganeseμg/l 10Sampled Jun 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Jun 2025 ≤ 10 2 Sodiummg/l 10.4Sampled Jun 2025 ≤ 200 10.4
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Jun 2025 No limit 0.005 Total Trihalomethanesμg/l 17.4Sampled Jun 2025 ≤ 100 0.87
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jun 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.005Sampled Jun 2025 ≤ 0.5 0.005
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jun 2025 ≤ 70 0.02 Atrazineug/L 0.005Sampled Jun 2025 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jun 2025 No limit 0.001 PFOSug/L 0.001Sampled Jun 2025 No limit 0.001 PFNAug/L 0.001Sampled Jun 2025 No limit 0.001 Total PFASug/L 0.028Sampled Jun 2025 ≤ 0.1 0.003 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 0.05 No limit 0.015 Sulfatemg/l 7.7 No limit 7.7
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.
