← Back to summary See all parameters TROIS VALLEES 1 RESERVOIR LATILLE · Ayron
EAUX DE VIENNE - SIVEER
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.2 0.2 – 1 0.004 ▲ Total Chlorinemg CL2/l 0.25 No limit 0.05
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 22 No limit 22 Hardnessmg CaCO3/l 340 80 – 459 340 Hardness fF 34 No limit 34 pH 7.3 6.5 – 9.5 7.3 TurbidityNTU 0.3 ≤ 4 0.03 ColorColor Units 5Sampled Jun 2026 ≤ 15 5 ConductivityμS / cm 712 ≤ 2,500 712 TDSmg/l 455.7estimated 0 – 1,199 455.7 Alkalinitymg CaCO3/l 269 No limit 269 Bicarbonatemg HCO3/l 331Sampled May 2025 No limit 331
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 Jun 2026 ≤ 50 0.25 Fluoridemg F/l 0.21 ≤ 1.5 0.063 Mercuryμg Hg/l 0.015Sampled Jun 2026 ≤ 1 0.002 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 31 ≤ 50 9.3
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 20Sampled Jun 2026 No limit 20 Calciummg/l 110Sampled Jun 2026 No limit 110 Potassiummg/l 2.8Sampled Jun 2026 No limit 2.8 Chloridemg/l 29 ≤ 250 29
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 20Sampled Jun 2026 ≤ 200 20 Antimonyμg/l 1Sampled Jun 2026 ≤ 5 1 Arsenicμg/l 1Sampled Jun 2026 ≤ 10 0.5 Bariumμg/l 30Sampled Jun 2026 ≤ 1,000 30 Cadmiumμg/l 0.095Sampled Jun 2026 ≤ 5 0.095 Chromiumμg/l 1Sampled Jun 2026 ≤ 50 1 Copperμg/l 10Sampled Jun 2026 ≤ 2,000 0.5 Ironμg/l 10 ≤ 200 10 Manganeseμg/l 1 ≤ 50 1 Leadμg/l 0.4Sampled Jun 2026 ≤ 10 0.02 Nickelμg/l 6 ≤ 20 6 Seleniumμg/l 2Sampled May 2025 ≤ 10 2 Sodiummg/l 16Sampled Jun 2026 ≤ 200 16
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.15Sampled Jun 2026 No limit 0.008 Total Trihalomethanesμg/l 7.79Sampled Jun 2026 ≤ 100 0.39
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 6Sampled Jun 2026 ≤ 60 0.3
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.01Sampled Jun 2026 ≤ 0.4 0.01 Total pesticidesug/L 0Sampled Jun 2026 ≤ 0.5 0
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.06Sampled Jun 2026 ≤ 70 0.06 Atrazineug/L 0.02Sampled Jun 2026 ≤ 3 0.02
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 47 No limit 47 Uraniumug/L 13Sampled Jun 2026 No limit 13
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.
