← Back to summary See all parameters HAUT POITOU LES RENTES · 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 0.2 No limit 0.04
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 26 No limit 26 Hardnessmg CaCO3/l 330 80 – 459 330 Hardness fF 33 No limit 33 pH 7.5 6.5 – 9.5 7.5 TurbidityNTU 0.3 ≤ 4 0.03 ColorColor Units 5Sampled May 2026 ≤ 15 5 ConductivityμS / cm 638 ≤ 2,500 638 TDSmg/l 408.3estimated 0 – 1,199 408.3 Alkalinitymg CaCO3/l 279 No limit 279 Bicarbonatemg HCO3/l 322Sampled Jun 2025 No limit 322
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0Sampled Dec 2025 ≤ 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 May 2026 ≤ 50 0.25 Fluoridemg F/l 0.53Sampled May 2026 ≤ 1.5 0.16 Mercuryμg Hg/l 0.015Sampled May 2026 ≤ 1 0.002 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 1.5 ≤ 50 0.45
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 21Sampled May 2026 No limit 21 Calciummg/l 95Sampled May 2026 No limit 95 Potassiummg/l 1.5Sampled May 2026 No limit 1.5 Chloridemg/l 20 ≤ 250 20
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 20Sampled May 2026 ≤ 200 20 Antimonyμg/l 0.5Sampled May 2026 ≤ 5 0.5 Arsenicμg/l 0.2Sampled May 2026 ≤ 10 0.1 Bariumμg/l 30Sampled May 2026 ≤ 1,000 30 Cadmiumμg/l 0.025Sampled May 2026 ≤ 5 0.025 Chromiumμg/l 1Sampled May 2026 ≤ 50 1 Copperμg/l 10Sampled May 2026 ≤ 2,000 0.5 Ironμg/l 165 ● (Near the limit) Sampled May 2026 ≤ 200 165 ● Manganeseμg/l 1Sampled May 2026 ≤ 50 1 Leadμg/l 0.4Sampled May 2026 ≤ 10 0.02 Nickelμg/l 1Sampled May 2026 ≤ 20 1 Seleniumμg/l 1Sampled Jun 2025 ≤ 10 1 Sodiummg/l 9.9Sampled May 2026 ≤ 200 9.9
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.15Sampled May 2026 No limit 0.008 Total Trihalomethanesμg/l 5.91Sampled Oct 2025 ≤ 100 0.3
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.01Sampled May 2026 ≤ 0.4 0.01 Total pesticidesug/L 0Sampled May 2026 ≤ 0.5 0
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.06Sampled May 2026 ≤ 70 0.06 Atrazineug/L 0.02Sampled May 2026 ≤ 3 0.02
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled May 2026 No limit 0.001 PFOSug/L 0.001Sampled May 2026 No limit 0.001 PFNAug/L 0.001Sampled May 2026 No limit 0.001 Total PFASug/L 0Sampled May 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 39 No limit 39 Uraniumug/L 0.1Sampled May 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.
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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.
