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SYNDICAT MAEP MONTAGNE NOIRE
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 0.08 No limit 0.016
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 21.7 No limit 21.7 Hardnessmg CaCO3/l 81.3 80 – 459 81.3 Hardness fF 8.13 No limit 8.13 pH 8.2 6.5 – 9.5 8.2 TurbidityNTU 0.15 ≤ 4 0.015 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 223 ≤ 2,500 223 TDSmg/l 142.7estimated 0 – 1,199 142.7 Alkalinitymg CaCO3/l 93.5 No limit 93.5 Bicarbonatemg HCO3/l 125Sampled Jul 2026 No limit 125
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 Jul 2026 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Jul 2026 ≤ 1.5 0.015 Mercuryμg Hg/l 0.5Sampled Jul 2026 ≤ 1 0.05 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 6.2 ≤ 50 1.86
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 3.6 No limit 3.6 Calciummg/l 26.6 No limit 26.6 Potassiummg/l 0.8Sampled Jul 2026 No limit 0.8 Chloridemg/l 9.3 ≤ 250 9.3
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 67 ≤ 200 67 Antimonyμg/l 1Sampled Jul 2026 ≤ 5 1 Arsenicμg/l 2Sampled Jul 2026 ≤ 10 1 Bariumμg/l 14Sampled Jul 2026 ≤ 1,000 14 Cadmiumμg/l 1Sampled Jul 2026 ≤ 5 1 Chromiumμg/l 5Sampled Jul 2026 ≤ 50 5 Copperμg/l 20Sampled Jul 2026 ≤ 2,000 1 Ironμg/l 10Sampled Jul 2026 ≤ 200 10 Manganeseμg/l 10Sampled Jul 2026 ≤ 50 10 Leadμg/l 2Sampled Jul 2026 ≤ 10 0.1 Nickelμg/l 5Sampled Jul 2026 ≤ 20 5 Seleniumμg/l 2Sampled Jul 2026 ≤ 10 2 Sodiummg/l 9.6Sampled Jul 2026 ≤ 200 9.6
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Jul 2026 No limit 0.005 Total Trihalomethanesμg/l 26.6Sampled Jul 2026 ≤ 100 1.33
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 1.2Sampled Jul 2026 ≤ 60 0.06
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jul 2026 ≤ 0.4 0.005 Total pesticidesug/L 0.007Sampled Jul 2026 ≤ 0.5 0.007
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jul 2026 ≤ 70 0.02 Atrazineug/L 0.005Sampled Jul 2026 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jul 2026 No limit 0.001 PFOSug/L 0.001Sampled Jul 2026 No limit 0.001 PFNAug/L 0.001Sampled Jul 2026 No limit 0.001 Total PFASug/L 0.002Sampled Jul 2026 ≤ 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 0.03 No limit 0.009 Sulfatemg/l 3.7 No limit 3.7 Uraniumug/L 10Sampled Jul 2026 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.
