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CA LOIRE FOREZ AGGLOMÉRATION
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 0.59 No limit 0.12
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 16.7 No limit 16.7 Hardnessmg CaCO3/l 109.1 80 – 459 109.1 Hardness fF 10.9 No limit 10.9 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 0.58 ≤ 4 0.058 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 294 ≤ 2,500 294 TDSmg/l 188.2estimated 0 – 1,199 188.2 Alkalinitymg CaCO3/l 75.5 No limit 75.5
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 Apr 2025 ≤ 50 0.5 Fluoridemg F/l 0.1Sampled Apr 2025 ≤ 1.5 0.03 Mercuryμg Hg/l 0.01Sampled Apr 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 2.1 ≤ 50 0.63
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 7 No limit 7 Calciummg/l 32.1 No limit 32.1 Potassiummg/l 1Sampled Apr 2025 No limit 1 Chloridemg/l 36.1 ≤ 250 36.1
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 25Sampled Apr 2025 ≤ 200 25 Antimonyμg/l 1Sampled Jan 2025 ≤ 5 1 Arsenicμg/l 5Sampled Apr 2025 ≤ 10 2.5 Bariumμg/l 10Sampled Apr 2025 ≤ 1,000 10 Cadmiumμg/l 1Sampled Jan 2025 ≤ 5 1 Chromiumμg/l 5Sampled Jan 2025 ≤ 50 5 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 13.8Sampled Apr 2025 ≤ 200 13.8
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 8.32 ≤ 100 0.42
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 0.001Sampled Apr 2025 ≤ 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 9.3 No limit 9.3 Uraniumug/L 10Sampled Apr 2025 No limit 10
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.
