← Back to summary See all parameters LE RIOLS · Trévien
AVEYRONNAISE DES EAUX
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.03 ▲ (Outside the range) 0.2 – 1 0.001 ▲ Total Chlorinemg CL2/l 0.06 No limit 0.012
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 25 No limit 25 Hardnessmg CaCO3/l 96.8 80 – 459 96.8 Hardness fF 9.68 No limit 9.68 pH 8.16 6.5 – 9.5 8.16 TurbidityNTU 0.12 ≤ 4 0.012 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 273 ≤ 2,500 273 TDSmg/l 174.7estimated 0 – 1,199 174.7 Alkalinitymg CaCO3/l 105 No limit 105 Bicarbonatemg HCO3/l 133Sampled Dec 2025 No limit 133
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 Dec 2025 ≤ 50 0.25 Fluoridemg F/l 0.1Sampled Dec 2025 ≤ 1.5 0.03 Mercuryμg Hg/l 0.01Sampled Dec 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 11.3 ≤ 50 3.39
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 2.8 No limit 2.8 Calciummg/l 34.1 No limit 34.1 Potassiummg/l 2.45Sampled Dec 2025 No limit 2.45 Chloridemg/l 12 ≤ 250 12
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 22Sampled Dec 2025 ≤ 200 22 Arsenicμg/l 0.19Sampled Dec 2025 ≤ 10 0.095 Bariumμg/l 23Sampled Dec 2025 ≤ 1,000 23 Ironμg/l 1.6Sampled Dec 2025 ≤ 200 1.6 Manganeseμg/l 0.29Sampled Dec 2025 ≤ 50 0.29 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.5Sampled Dec 2025 ≤ 10 0.5 Sodiummg/l 12.9Sampled Dec 2025 ≤ 200 12.9
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Dec 2025 No limit 0.005
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.01Sampled Dec 2025 ≤ 0.4 0.01 Total pesticidesug/L 0Sampled Dec 2025 ≤ 0.5 0
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Dec 2025 ≤ 70 0.02 Atrazineug/L 0.01Sampled Dec 2025 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.002Sampled Dec 2025 No limit 0.002 PFOSug/L 0.002Sampled Dec 2025 No limit 0.002 PFNAug/L 0.002Sampled Dec 2025 No limit 0.002 Total PFASug/L 0.044Sampled Dec 2025 ≤ 0.1 0.004 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 6.7 No limit 6.7
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.
