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CA LOIRE FOREZ AGGLOMÉRATION
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.03 ▲ (Outside the range) 0.2 – 1 0.001 ▲ Total Chlorinemg CL2/l 0.05 No limit 0.01
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 16.2 No limit 16.2 Hardnessmg CaCO3/l 18.7 ● (Near the limit) 80 – 459 18.7 ● Hardness fF 1.87 No limit 1.87 pH 8.2 6.5 – 9.5 8.2 TurbidityNTU 0.45 ≤ 4 0.045 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 87 ≤ 2,500 87 TDSmg/l 55.7estimated 0 – 1,199 55.7 Alkalinitymg CaCO3/l 34 No limit 34
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0 ≤ 0 0 eColiUFC/100ml 0Sampled May 2026 ≤ 0 0 BacteriasNMP/100ml 0Sampled May 2026 ≤ 0 0 EnterococcusUFC/100ml 0 ≤ 0 0
Chemical parameters Chemical parameters Parameter Unfiltered tap water Allowed range Filtered Cyanide totalμg CN/l 10Sampled Sept 2025 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Sept 2025 ≤ 1.5 0.015 Mercuryμg Hg/l 0.01Sampled Sept 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 1.3 ≤ 50 0.39
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 1.5 No limit 1.5 Calciummg/l 5 No limit 5 Potassiummg/l 0.5Sampled Sept 2025 No limit 0.5 Chloridemg/l 5 ≤ 250 5
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 19Sampled Sept 2025 ≤ 200 19 Antimonyμg/l 1Sampled Jul 2025 ≤ 5 1 Arsenicμg/l 2Sampled Sept 2025 ≤ 10 1 Bariumμg/l 10Sampled Sept 2025 ≤ 1,000 10 Cadmiumμg/l 1Sampled Jul 2025 ≤ 5 1 Chromiumμg/l 5Sampled Jul 2025 ≤ 50 5 Ironμg/l 10Sampled Sept 2025 ≤ 200 10 Manganeseμg/l 10Sampled Sept 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Sept 2025 ≤ 10 2 Sodiummg/l 4.7Sampled Sept 2025 ≤ 200 4.7
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Sept 2025 No limit 0.005 Total Trihalomethanesμg/l 6.13Sampled May 2026 ≤ 100 0.31
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Sept 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.5 ● (Near the limit) Sampled Sept 2025 ≤ 0.5 0.5 ●
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Sept 2025 ≤ 70 0.02 Atrazineug/L 0.005Sampled Sept 2025 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Sept 2025 No limit 0.001 PFOSug/L 0.001Sampled Sept 2025 No limit 0.001 PFNAug/L 0.001Sampled Sept 2025 No limit 0.001 Total PFASug/L 0.029Sampled Sept 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 0.01 No limit 0.003 Sulfatemg/l 5.7 No limit 5.7
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.
