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CA LOIRE FOREZ AGGLOMÉRATION
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.05 ● (Near the limit) 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 16.9 No limit 16.9 Hardnessmg CaCO3/l 25.7 ● (Near the limit) 80 – 459 25.7 ● Hardness fF 2.57 No limit 2.57 pH 6.6 6.5 – 9.5 6.6 TurbidityNTU 0.24 ≤ 4 0.024 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 91 ≤ 2,500 91 TDSmg/l 58.2estimated 0 – 1,199 58.2 Alkalinitymg CaCO3/l 25 No limit 25
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 0.1Sampled Jun 2025 ≤ 1.5 0.03 Mercuryμg Hg/l 0.01Sampled Jun 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 3.6 ≤ 50 1.08
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 2 No limit 2 Calciummg/l 7 No limit 7 Potassiummg/l 1.3Sampled Jun 2025 No limit 1.3 Chloridemg/l 4.4 ≤ 250 4.4
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 14Sampled Jun 2025 ≤ 200 14 Antimonyμg/l 1Sampled Aug 2025 ≤ 5 1 Arsenicμg/l 2Sampled Jun 2025 ≤ 10 1 Bariumμg/l 27Sampled Jun 2025 ≤ 1,000 27 Cadmiumμg/l 1Sampled Aug 2025 ≤ 5 1 Chromiumμg/l 5Sampled Aug 2025 ≤ 50 5 Ironμg/l 10Sampled Aug 2025 ≤ 200 10 Manganeseμg/l 10Sampled Jun 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Jun 2025 ≤ 10 2 Sodiummg/l 5.4Sampled Jun 2025 ≤ 200 5.4
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 7.77Sampled Aug 2025 ≤ 100 0.39
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jun 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.5 ● (Near the limit) Sampled Jun 2025 ≤ 0.5 0.5 ●
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 0.01 No limit 0.003 Sulfatemg/l 7.9 No limit 7.9
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.
