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MAIRIE DE MARLHES
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.18 ● (Near the limit) 0.2 – 1 0.004 ▲ Total Chlorinemg CL2/l 0.21 No limit 0.042
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 18.2 No limit 18.2 Hardnessmg CaCO3/l 63 ● (Near the limit) 80 – 459 63 ● Hardness fF 6.3 No limit 6.3 pH 7.3 6.5 – 9.5 7.3 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 158 ≤ 2,500 158 TDSmg/l 101.1estimated 0 – 1,199 101.1 Alkalinitymg CaCO3/l 66.2 No limit 66.2
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 Aug 2025 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Aug 2025 ≤ 1.5 0.015 Mercuryμg Hg/l 0.01Sampled Aug 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 2.8 ≤ 50 0.84
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 0.8 No limit 0.8 Calciummg/l 23.9 No limit 23.9 Potassiummg/l 0.5Sampled Aug 2025 No limit 0.5 Chloridemg/l 9.9 ≤ 250 9.9
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 11Sampled Aug 2025 ≤ 200 11 Antimonyμg/l 1Sampled Oct 2025 ≤ 5 1 Arsenicμg/l 2Sampled Aug 2025 ≤ 10 1 Bariumμg/l 10Sampled Aug 2025 ≤ 1,000 10 Cadmiumμg/l 1Sampled Oct 2025 ≤ 5 1 Chromiumμg/l 5Sampled Oct 2025 ≤ 50 5 Ironμg/l 10Sampled Oct 2025 ≤ 200 10 Manganeseμg/l 10Sampled Aug 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Aug 2025 ≤ 10 2 Sodiummg/l 3.3Sampled Aug 2025 ≤ 200 3.3
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Aug 2025 No limit 0.005 Total Trihalomethanesμg/l 10.9Sampled Oct 2025 ≤ 100 0.55
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Aug 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.5 ● (Near the limit) Sampled Aug 2025 ≤ 0.5 0.5 ●
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Aug 2025 ≤ 70 0.02 Atrazineug/L 0.005Sampled Aug 2025 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Aug 2025 No limit 0.001 PFOSug/L 0.001Sampled Aug 2025 No limit 0.001 PFNAug/L 0.001Sampled Aug 2025 No limit 0.001 Total PFASug/L 0.029Sampled Aug 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 0.03 No limit 0.009 Sulfatemg/l 4 No limit 4
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.
