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STGS
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.08 ● (Near the limit) 0.2 – 1 0.002 ▲ Total Chlorinemg CL2/l 0.2 No limit 0.04
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 25.4 No limit 25.4 Hardnessmg CaCO3/l 163 80 – 459 163 Hardness fF 16.3 No limit 16.3 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 0.3 ≤ 4 0.03 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 533 ≤ 2,500 533 TDSmg/l 341.1estimated 0 – 1,199 341.1 Alkalinitymg CaCO3/l 160 No limit 160 Bicarbonatemg HCO3/l 166Sampled May 2026 No limit 166
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 5Sampled May 2026 ≤ 50 0.25 Fluoridemg F/l 0.076Sampled May 2026 ≤ 1.5 0.023 Mercuryμg Hg/l 0.01Sampled May 2026 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 38 ≤ 50 11.4
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 6.6Sampled May 2026 No limit 6.6 Calciummg/l 53.3Sampled May 2026 No limit 53.3 Potassiummg/l 3.6Sampled May 2026 No limit 3.6 Chloridemg/l 33.6 ≤ 250 33.6
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 13Sampled May 2026 ≤ 200 13 Antimonyμg/l 0.1Sampled May 2026 ≤ 5 0.1 Arsenicμg/l 1.8Sampled May 2026 ≤ 10 0.9 Bariumμg/l 58Sampled May 2026 ≤ 1,000 58 Cadmiumμg/l 0.35Sampled May 2026 ≤ 5 0.35 Chromiumμg/l 0.5Sampled May 2026 ≤ 50 0.5 Copperμg/l 24.1Sampled Sept 2025 ≤ 2,000 1.21 Ironμg/l 8 ≤ 200 8 Manganeseμg/l 1 ≤ 50 1 Leadμg/l 0.5Sampled Sept 2025 ≤ 10 0.025 Nickelμg/l 1.3Sampled Sept 2025 ≤ 20 1.3 Seleniumμg/l 0.2Sampled May 2026 ≤ 10 0.2 Sodiummg/l 29.4Sampled May 2026 ≤ 200 29.4
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled May 2026 No limit 0.005 Total Trihalomethanesμg/l 29 ≤ 100 1.45
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Chlordaneug/L 0Sampled May 2026 ≤ 2 0 Heptachlorug/L 0.001Sampled May 2026 ≤ 0.4 0.001 Total pesticidesug/L 0.042Sampled May 2026 ≤ 0.5 0.042
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled May 2026 ≤ 70 0.02 Atrazineug/L 0.01Sampled May 2026 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled May 2026 No limit 0.001 PFOSug/L 0.002Sampled May 2026 No limit 0.002 PFNAug/L 0.001Sampled May 2026 No limit 0.001 Total PFASug/L 0Sampled May 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 0.01 No limit 0.003 Sulfatemg/l 30.9 No limit 30.9 Uraniumug/L 0.08Sampled May 2026 No limit 0.08
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.
Your Water Quality
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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.
