← Back to summary See all parameters LOIRON · La Gravelle
SUEZ
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.66 0.2 – 1 0.013 ▲ Total Chlorinemg CL2/l 0.68 No limit 0.14
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 13.2 No limit 13.2 Hardnessmg CaCO3/l 192 80 – 459 192 Hardness fF 19.2 No limit 19.2 pH 8.1 6.5 – 9.5 8.1 TurbidityNTU 0.3 ≤ 4 0.03 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 489 ≤ 2,500 489 TDSmg/l 313estimated 0 – 1,199 313 Alkalinitymg CaCO3/l 154 No limit 154 Bicarbonatemg HCO3/l 188 No limit 188
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 5Sampled Nov 2025 ≤ 50 0.25 Fluoridemg F/l 0.068Sampled Nov 2025 ≤ 1.5 0.02 Mercuryμg Hg/l 0.015Sampled Nov 2025 ≤ 1 0.002 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 40 ● (Near the limit) ≤ 50 12
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 11.5 No limit 11.5 Calciummg/l 56.8 No limit 56.8 Potassiummg/l 2.6 No limit 2.6 Chloridemg/l 24.8 ≤ 250 24.8
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 4Sampled Nov 2025 ≤ 200 4 Arsenicμg/l 0.1Sampled Nov 2025 ≤ 10 0.05 Bariumμg/l 31Sampled Nov 2025 ≤ 1,000 31 Ironμg/l 1 ≤ 200 1 Manganeseμg/l 4 ≤ 50 4 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 0.2Sampled Nov 2025 ≤ 10 0.2 Sodiummg/l 23 ≤ 200 23
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Nov 2025 No limit 0.005 Total Trihalomethanesμg/l 3.5Sampled Nov 2025 ≤ 100 0.18
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Chlordaneug/L 0Sampled Nov 2025 ≤ 2 0 Heptachlorug/L 0.001Sampled Nov 2025 ≤ 0.4 0.001 Total pesticidesug/L 0.042Sampled Nov 2025 ≤ 0.5 0.042
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Nov 2025 ≤ 70 0.02 Atrazineug/L 0.01Sampled Nov 2025 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Aug 2025 No limit 0.001 PFOSug/L 0.011Sampled Aug 2025 No limit 0.011 PFNAug/L 0.001Sampled Aug 2025 No limit 0.001 Total PFASug/L 0.017Sampled Aug 2025 ≤ 0.1 0.002 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 25.1 No limit 25.1
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.
