← Back to summary See all parameters LFA GRIMARD PRALONG · Chalain-le-Comtal
CA LOIRE FOREZ AGGLOMÉRATION
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.57 0.2 – 1 0.011 ▲ Total Chlorinemg CL2/l 0.59 No limit 0.12
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 10.9 No limit 10.9 Hardnessmg CaCO3/l 74.2 ● (Near the limit) 80 – 459 74.2 ● Hardness fF 7.42 No limit 7.42 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 169 ≤ 2,500 169 TDSmg/l 108.2estimated 0 – 1,199 108.2 Alkalinitymg CaCO3/l 84.2 No limit 84.2
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 Feb 2025 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Feb 2025 ≤ 1.5 0.015 Mercuryμg Hg/l 0.01Sampled Feb 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 5.4 ≤ 50 1.62
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 0.6 No limit 0.6 Calciummg/l 28.7 No limit 28.7 Potassiummg/l 0.7Sampled Feb 2025 No limit 0.7 Chloridemg/l 2 ≤ 250 2
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 10Sampled Feb 2025 ≤ 200 10 Antimonyμg/l 1Sampled Nov 2025 ≤ 5 1 Arsenicμg/l 4Sampled Feb 2025 ≤ 10 2 Bariumμg/l 10Sampled Feb 2025 ≤ 1,000 10 Cadmiumμg/l 1Sampled Nov 2025 ≤ 5 1 Chromiumμg/l 5Sampled Nov 2025 ≤ 50 5 Ironμg/l 13Sampled Nov 2025 ≤ 200 13 Manganeseμg/l 10Sampled Feb 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Feb 2025 ≤ 10 2 Sodiummg/l 4.3Sampled Feb 2025 ≤ 200 4.3
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Feb 2025 No limit 0.005 Total Trihalomethanesμg/l 0.66Sampled Feb 2025 ≤ 100 0.033
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Feb 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.5 ● (Near the limit) Sampled Feb 2025 ≤ 0.5 0.5 ●
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Feb 2025 ≤ 70 0.02 Atrazineug/L 0.005Sampled Feb 2025 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered Total PFASug/L Not reported ≤ 0.1 — 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 2.9 No limit 2.9
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.
