← Back to summary See all parameters SEM MARCENOD BOURG · Viricelles
SAINT-ETIENNE MÉTROPOLE
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 0.03 No limit 0.006
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 22.3 No limit 22.3 Hardnessmg CaCO3/l 88.1 80 – 459 88.1 Hardness fF 8.81 No limit 8.81 pH 6.9 6.5 – 9.5 6.9 TurbidityNTU 0.2 ≤ 4 0.02 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 284 ≤ 2,500 284 TDSmg/l 181.8estimated 0 – 1,199 181.8 Alkalinitymg CaCO3/l 50.6 No limit 50.6
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 10Sampled Mar 2025 ≤ 50 0.5 Fluoridemg F/l 0.07Sampled Mar 2025 ≤ 1.5 0.021 Mercuryμg Hg/l 0.01Sampled Mar 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 12.5 ≤ 50 3.75
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 3.8 No limit 3.8 Calciummg/l 29 No limit 29 Potassiummg/l 1.5Sampled Mar 2025 No limit 1.5 Chloridemg/l 40.8 ≤ 250 40.8
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 28Sampled Mar 2025 ≤ 200 28 Antimonyμg/l 1Sampled Aug 2025 ≤ 5 1 Arsenicμg/l 2Sampled Mar 2025 ≤ 10 1 Bariumμg/l 12Sampled Mar 2025 ≤ 1,000 12 Cadmiumμg/l 1Sampled Aug 2025 ≤ 5 1 Chromiumμg/l 5Sampled Aug 2025 ≤ 50 5 Ironμg/l 133Sampled Aug 2025 ≤ 200 133 Manganeseμg/l 10Sampled Mar 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Mar 2025 ≤ 10 2 Sodiummg/l 12.7Sampled Mar 2025 ≤ 200 12.7
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Mar 2025 No limit 0.005
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Mar 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.054Sampled Mar 2025 ≤ 0.5 0.054
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Mar 2025 ≤ 70 0.02 Atrazineug/L 0.005Sampled Mar 2025 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Mar 2025 No limit 0.001 PFOSug/L 0.001Sampled Mar 2025 No limit 0.001 PFNAug/L 0.001Sampled Mar 2025 No limit 0.001 Total PFASug/L 0.1 ● (Near the limit) Sampled Mar 2025 ≤ 0.1 0.01 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 9.6 No limit 9.6
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.
