← Back to summary See all parameters VERNON GIVERNY · Gasny
STGS
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.6 0.2 – 1 0.012 ▲ Total Chlorinemg CL2/l 0.71 No limit 0.14
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 19.7 No limit 19.7 Hardnessmg CaCO3/l 320 80 – 459 320 Hardness fF 32 No limit 32 pH 7.5 6.5 – 9.5 7.5 TurbidityNTU 0.3 ≤ 4 0.03 ConductivityμS / cm 690 ≤ 2,500 690 TDSmg/l 441.6estimated 0 – 1,199 441.6 Alkalinitymg CaCO3/l 269 No limit 269
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered 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 Dec 2025 ≤ 50 0.5 Fluoridemg F/l 0.16Sampled Dec 2025 ≤ 1.5 0.048 Mercuryμg Hg/l 0.05Sampled Dec 2025 ≤ 1 0.005 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 18.8 ≤ 50 5.64
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 8.09Sampled Dec 2025 No limit 8.09 Calciummg/l 129.6Sampled Dec 2025 No limit 129.6 Potassiummg/l 3.5Sampled Dec 2025 No limit 3.5 Chloridemg/l 24 ≤ 250 24
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 2Sampled Dec 2025 ≤ 200 2 Antimonyμg/l 0.5Sampled Jul 2025 ≤ 5 0.5 Arsenicμg/l 0.5Sampled Dec 2025 ≤ 10 0.25 Bariumμg/l 31.2Sampled Dec 2025 ≤ 1,000 31.2 Cadmiumμg/l 0.1Sampled Jul 2025 ≤ 5 0.1 Chromiumμg/l 0.5Sampled Jul 2025 ≤ 50 0.5 Ironμg/l 20 ≤ 200 20 Manganeseμg/l 0.5Sampled Dec 2025 ≤ 50 0.5 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Dec 2025 ≤ 10 2 Sodiummg/l 12.9Sampled Dec 2025 ≤ 200 12.9
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.05Sampled Dec 2025 No limit 0.003 Total Trihalomethanesμg/l 11 ≤ 100 0.55
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Dec 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.044Sampled Dec 2025 ≤ 0.5 0.044
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Dec 2025 ≤ 70 0.02 Atrazineug/L 0.01Sampled Dec 2025 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.002Sampled Mar 2025 No limit 0.002 PFOSug/L 0.001Sampled Mar 2025 No limit 0.001 PFNAug/L 0.001Sampled Mar 2025 No limit 0.001 Total PFASug/L 0Sampled Mar 2025 ≤ 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 33.3 No limit 33.3
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.
