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CA LOIRE FOREZ AGGLOMÉRATION
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.15 ● (Near the limit) 0.2 – 1 0.003 ▲ Total Chlorinemg CL2/l 0.18 No limit 0.036
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 9.8 No limit 9.8 Hardnessmg CaCO3/l 11.3 ● (Near the limit) 80 – 459 11.3 ● Hardness fF 1.13 No limit 1.13 pH 6.8 6.5 – 9.5 6.8 TurbidityNTU 1.1 ≤ 4 0.11 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 50 ≤ 2,500 50 Alkalinitymg CaCO3/l 13.5 No limit 13.5
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 Apr 2025 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Apr 2025 ≤ 1.5 0.015 Mercuryμg Hg/l 0.01Sampled Apr 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.02 ≤ 0.5 0.008 Nitratesmg NO3/l 3.4 ≤ 50 1.02
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 0.8Sampled Apr 2025 No limit 0.8 Calciummg/l 3.3Sampled Apr 2025 No limit 3.3 Potassiummg/l 0.7Sampled Apr 2025 No limit 0.7 Chloridemg/l 2 ≤ 250 2
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 10Sampled Apr 2025 ≤ 200 10 Arsenicμg/l 2Sampled Apr 2025 ≤ 10 1 Bariumμg/l 10Sampled Apr 2025 ≤ 1,000 10 Ironμg/l 10Sampled Apr 2025 ≤ 200 10 Manganeseμg/l 10Sampled Apr 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Apr 2025 ≤ 10 2 Sodiummg/l 4.6Sampled Apr 2025 ≤ 200 4.6
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Apr 2025 No limit 0.005 Total Trihalomethanesμg/l 2.47Sampled Apr 2025 ≤ 100 0.12
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Apr 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.5 ● (Near the limit) Sampled Apr 2025 ≤ 0.5 0.5 ●
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Apr 2025 ≤ 70 0.02 Atrazineug/L 0.005Sampled Apr 2025 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Apr 2025 No limit 0.001 PFOSug/L 0.001Sampled Apr 2025 No limit 0.001 PFNAug/L 0.001Sampled Apr 2025 No limit 0.001 Total PFASug/L 0.1 ● (Near the limit) Sampled Apr 2025 ≤ 0.1 0.01 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 2.8 No limit 2.8
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.
