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Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.06 ● (Near the limit) 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 14.8 No limit 14.8 Hardnessmg CaCO3/l 78.1 ● (Near the limit) 80 – 459 78.1 ● Hardness fF 7.81 No limit 7.81 pH 7.8 6.5 – 9.5 7.8 TurbidityNTU 0.14 ≤ 4 0.014 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 170 ≤ 2,500 170 TDSmg/l 108.8estimated 0 – 1,199 108.8 Alkalinitymg CaCO3/l 89 No limit 89
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 2026 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Apr 2026 ≤ 1.5 0.015 Mercuryμg Hg/l 0.01Sampled Apr 2026 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 0.9 ≤ 50 0.27
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 2.3Sampled Apr 2026 No limit 2.3 Calciummg/l 30.9Sampled Apr 2026 No limit 30.9 Potassiummg/l 0.2Sampled Apr 2026 No limit 0.2 Chloridemg/l 0.6 ≤ 250 0.6
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 13Sampled Apr 2026 ≤ 200 13 Antimonyμg/l 1Sampled Apr 2026 ≤ 5 1 Arsenicμg/l 2Sampled Apr 2026 ≤ 10 1 Bariumμg/l 10Sampled Apr 2026 ≤ 1,000 10 Cadmiumμg/l 1Sampled Apr 2026 ≤ 5 1 Chromiumμg/l 5Sampled Apr 2026 ≤ 50 5 Copperμg/l 24Sampled Apr 2026 ≤ 2,000 1.2 Ironμg/l 10Sampled Apr 2026 ≤ 200 10 Manganeseμg/l 10Sampled Apr 2026 ≤ 50 10 Leadμg/l 2Sampled Apr 2026 ≤ 10 0.1 Nickelμg/l 5Sampled Apr 2026 ≤ 20 5 Seleniumμg/l 2Sampled Apr 2026 ≤ 10 2 Sodiummg/l 1.7Sampled Apr 2026 ≤ 200 1.7
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Apr 2026 No limit 0.005 Total Trihalomethanesμg/l 0.5Sampled Sept 2025 ≤ 100 0.025
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Apr 2026 ≤ 0.4 0.005 Total pesticidesug/L 0.5 ● (Near the limit) Sampled Apr 2026 ≤ 0.5 0.5 ●
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Apr 2026 ≤ 70 0.02 Atrazineug/L 0.005Sampled Apr 2026 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Apr 2026 No limit 0.001 PFOSug/L 0.001Sampled Apr 2026 No limit 0.001 PFNAug/L 0.001Sampled Apr 2026 No limit 0.001 Total PFASug/L 0.029Sampled Apr 2026 ≤ 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 6.6 No limit 6.6 Uraniumug/L 10Sampled Apr 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.
