← Back to summary See all parameters OISSEAU · La Haie-Traversaine
STGS
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.21 0.2 – 1 0.004 ▲ Total Chlorinemg CL2/l 0.28 No limit 0.056
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 25 No limit 25 Hardnessmg CaCO3/l 197 80 – 459 197 Hardness fF 19.7 No limit 19.7 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 0.3 ≤ 4 0.03 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 468 ≤ 2,500 468 TDSmg/l 299.5estimated 0 – 1,199 299.5 Alkalinitymg CaCO3/l 172 No limit 172 Bicarbonatemg HCO3/l 203Sampled Apr 2026 No limit 203
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 Apr 2026 ≤ 50 0.25 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 37 ≤ 50 11.1
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 8.1Sampled Apr 2026 No limit 8.1 Calciummg/l 58.4Sampled Apr 2026 No limit 58.4 Potassiummg/l 1Sampled Apr 2026 No limit 1 Chloridemg/l 16.9 ≤ 250 16.9
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 2Sampled Apr 2026 ≤ 200 2 Antimonyμg/l 0.1Sampled Apr 2026 ≤ 5 0.1 Arsenicμg/l 0.8Sampled Apr 2026 ≤ 10 0.4 Bariumμg/l 1.1Sampled Apr 2026 ≤ 1,000 1.1 Cadmiumμg/l 0.04Sampled Apr 2026 ≤ 5 0.04 Chromiumμg/l 0.7Sampled Apr 2026 ≤ 50 0.7 Copperμg/l 108Sampled Aug 2025 ≤ 2,000 5.4 Ironμg/l 1Sampled Apr 2026 ≤ 200 1 Manganeseμg/l 0.5Sampled Apr 2026 ≤ 50 0.5 Leadμg/l 2.9Sampled Aug 2025 ≤ 10 0.15 Nickelμg/l 1.8Sampled Aug 2025 ≤ 20 1.8 Seleniumμg/l 0.2Sampled Apr 2026 ≤ 10 0.2 Sodiummg/l 15.1Sampled Apr 2026 ≤ 200 15.1
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 12Sampled Aug 2025 ≤ 100 0.6
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Chlordaneug/L 0Sampled Apr 2026 ≤ 2 0 Heptachlorug/L 0.001Sampled Apr 2026 ≤ 0.4 0.001 Total pesticidesug/L 0.021Sampled Apr 2026 ≤ 0.5 0.021
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Apr 2026 ≤ 70 0.02 Atrazineug/L 0.01Sampled Apr 2026 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Apr 2026 No limit 0.001 PFOSug/L 0.002Sampled Apr 2026 No limit 0.002 PFNAug/L 0.001Sampled Apr 2026 No limit 0.001 Total PFASug/L 0Sampled Apr 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 14.6 No limit 14.6 Uraniumug/L 0.1Sampled Apr 2026 No limit 0.1
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
Independent information about tap water quality in France.
Brought to you by
tappwater.co
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.
