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VEOLIA EAU CGE LOUVIERS
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.27 0.2 – 1 0.005 ▲ Total Chlorinemg CL2/l 0.3 No limit 0.06
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 24 No limit 24 Hardnessmg CaCO3/l 298 80 – 459 298 Hardness fF 29.8 No limit 29.8 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 0.3 ≤ 4 0.03 ConductivityμS / cm 668 ≤ 2,500 668 TDSmg/l 427.5estimated 0 – 1,199 427.5 Alkalinitymg CaCO3/l 241 No limit 241 Bicarbonatemg HCO3/l 301Sampled Jun 2026 No limit 301
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 Jun 2026 ≤ 50 0.5 Fluoridemg F/l 0.1Sampled Jun 2026 ≤ 1.5 0.03 Mercuryμg Hg/l 0.015Sampled Jun 2026 ≤ 1 0.002 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 36.7 ≤ 50 11
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 7.19Sampled Jun 2026 No limit 7.19 Calciummg/l 106Sampled Jun 2026 No limit 106 Potassiummg/l 2.5Sampled Jun 2026 No limit 2.5 Chloridemg/l 26.3 ≤ 250 26.3
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 4.7Sampled Jun 2026 ≤ 200 4.7 Antimonyμg/l 0.5Sampled Jun 2026 ≤ 5 0.5 Arsenicμg/l 0.3Sampled Jun 2026 ≤ 10 0.15 Bariumμg/l 21.6Sampled Jun 2026 ≤ 1,000 21.6 Cadmiumμg/l 0.025Sampled Jun 2026 ≤ 5 0.025 Chromiumμg/l 0.71Sampled Jun 2026 ≤ 50 0.71 Ironμg/l 1.2Sampled Jun 2026 ≤ 200 1.2 Manganeseμg/l 0.5Sampled Jun 2026 ≤ 50 0.5 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.64Sampled Jun 2026 ≤ 10 0.64 Sodiummg/l 12.6Sampled Jun 2026 ≤ 200 12.6
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.05Sampled Jun 2026 No limit 0.003 Total Trihalomethanesμg/l 10Sampled Jun 2026 ≤ 100 0.5
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 1.73Sampled Jun 2026 ≤ 60 0.087
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jun 2026 ≤ 0.4 0.005 Total pesticidesug/L 0.18Sampled Jun 2026 ≤ 0.5 0.18
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jun 2026 ≤ 70 0.02 Atrazineug/L 0.01Sampled Jun 2026 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jun 2026 No limit 0.001 PFOSug/L 0.001Sampled Jun 2026 No limit 0.001 PFNAug/L 0.001Sampled Jun 2026 No limit 0.001 Total PFASug/L 0.003Sampled Jun 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 15.3 No limit 15.3 Uraniumug/L 0.41Sampled Jun 2026 No limit 0.41
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.
