← Back to summary See all parameters ISNEAUVILLE · Bois-Guillaume
VEOLIA CGE
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.3Sampled Jul 2026 0.2 – 1 0.006 ▲ Total Chlorinemg CL2/l 0.34Sampled Jul 2026 No limit 0.068
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 21Sampled Jul 2026 No limit 21 Hardnessmg CaCO3/l 296Sampled Jul 2026 80 – 459 296 Hardness fF 29.6Sampled Jul 2026 No limit 29.6 pH 7.1Sampled Jul 2026 6.5 – 9.5 7.1 TurbidityNTU 0.44Sampled Jul 2026 ≤ 4 0.044 ConductivityμS / cm 637Sampled Jul 2026 ≤ 2,500 637 TDSmg/l 407.7Sampled Jul 2026 estimated 0 – 1,199 407.7 Alkalinitymg CaCO3/l 282Sampled Jul 2026 No limit 282 Bicarbonatemg HCO3/l 316Sampled Jan 2026 No limit 316
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0Sampled Jul 2026 ≤ 0 0 eColiUFC/100ml 0Sampled Jul 2026 ≤ 0 0 BacteriasNMP/100ml 0Sampled Jul 2026 ≤ 0 0 EnterococcusUFC/100ml 0Sampled Jul 2026 ≤ 0 0
Chemical parameters Chemical parameters Parameter Unfiltered tap water Allowed range Filtered Cyanide totalμg CN/l 10Sampled Jan 2026 ≤ 50 0.5 Fluoridemg F/l 0.1Sampled Jan 2026 ≤ 1.5 0.03 Mercuryμg Hg/l 0.05Sampled Jan 2026 ≤ 1 0.005 Nitritesmg NO2/l 0.01Sampled Jul 2026 ≤ 0.5 0.004 Nitratesmg NO3/l 24.3Sampled Jul 2026 ≤ 50 7.29
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 5.1Sampled Jan 2026 No limit 5.1 Calciummg/l 117Sampled Jan 2026 No limit 117 Potassiummg/l 1.6Sampled Jan 2026 No limit 1.6 Chloridemg/l 17.2Sampled Jul 2026 ≤ 250 17.2
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 2.8Sampled Jan 2026 ≤ 200 2.8 Antimonyμg/l 0.5Sampled Jan 2026 ≤ 5 0.5 Arsenicμg/l 0.5Sampled Jan 2026 ≤ 10 0.25 Bariumμg/l 29.6Sampled Jan 2026 ≤ 1,000 29.6 Cadmiumμg/l 0.1Sampled Jan 2026 ≤ 5 0.1 Chromiumμg/l 1.1Sampled Jan 2026 ≤ 50 1.1 Copperμg/l 63.4 ≤ 2,000 3.17 Ironμg/l 5Sampled Jan 2026 ≤ 200 5 Manganeseμg/l 0.5Sampled Jan 2026 ≤ 50 0.5 Leadμg/l 1.4 ≤ 10 0.07 Nickelμg/l 0.5 ≤ 20 0.5 Seleniumμg/l 2Sampled Jan 2026 ≤ 10 2 Sodiummg/l 7.7Sampled Jan 2026 ≤ 200 7.7
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.05Sampled Jan 2026 No limit 0.003 Total Trihalomethanesμg/l 8.2Sampled Jan 2026 ≤ 100 0.41
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 1.17Sampled Jan 2026 ≤ 60 0.059
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jan 2026 ≤ 0.4 0.005 Total pesticidesug/L 0.26Sampled Jan 2026 ≤ 0.5 0.26
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jan 2026 ≤ 70 0.02 Atrazineug/L 0.01Sampled Jan 2026 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jan 2026 No limit 0.001 PFOSug/L 0.001Sampled Jan 2026 No limit 0.001 PFNAug/L 0.001Sampled Jan 2026 No limit 0.001 Total PFASug/L 0.002Sampled Jan 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 0.02Sampled Jul 2026 No limit 0.006 Sulfatemg/l 8.94Sampled Jul 2026 No limit 8.94
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.