← Back to summary See all parameters LA DEMOISELLE NORD · Bretagne
SAUR
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.06 ● (Near the limit) 0.2 – 1 0.001 ▲ Total Chlorinemg CL2/l 0.11 No limit 0.022
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 21 No limit 21 Hardnessmg CaCO3/l 280 80 – 459 280 Hardness fF 28 No limit 28 pH 7.5 6.5 – 9.5 7.5 TurbidityNTU 0.3 ≤ 4 0.03 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 652Sampled Nov 2025 ≤ 2,500 652 TDSmg/l 417.3Sampled Nov 2025 estimated 0 – 1,199 417.3 Alkalinitymg CaCO3/l 237 No limit 237 Bicarbonatemg HCO3/l 346Sampled Jun 2025 No limit 346
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 0.58Sampled Jun 2026 ≤ 1.5 0.17 Mercuryμg Hg/l 0.015Sampled Jun 2026 ≤ 1 0.002 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 9.6 ≤ 50 2.88
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 19.9Sampled Jun 2026 No limit 19.9 Calciummg/l 85.4Sampled Jun 2026 No limit 85.4 Potassiummg/l 1.4Sampled Jun 2026 No limit 1.4 Chloridemg/l 17.1 ≤ 250 17.1
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 2Sampled Jun 2026 ≤ 200 2 Antimonyμg/l 0.2Sampled Jun 2026 ≤ 5 0.2 Arsenicμg/l 0.2Sampled Jun 2026 ≤ 10 0.1 Bariumμg/l 37Sampled Jun 2026 ≤ 1,000 37 Cadmiumμg/l 0.01Sampled Jun 2026 ≤ 5 0.01 Chromiumμg/l 0.6Sampled Jun 2026 ≤ 50 0.6 Ironμg/l 21 ≤ 200 21 Manganeseμg/l 1Sampled Jun 2026 ≤ 50 1 Leadμg/l Not reported ≤ 10 — Sodiummg/l 5.3Sampled Jun 2026 ≤ 200 5.3
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Jun 2026 No limit 0.005 Total Trihalomethanesμg/l 3.8Sampled Jun 2026 ≤ 100 0.19
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 1.3Sampled Jun 2026 ≤ 60 0.065
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.001Sampled Jun 2026 ≤ 0.4 0.001 Total pesticidesug/L 0.021Sampled Jun 2026 ≤ 0.5 0.021
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jun 2026 ≤ 70 0.02 Atrazineug/L 0.01Sampled Jun 2026 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jun 2026 No limit 0.001 PFOSug/L 0.002Sampled Jun 2026 No limit 0.002 PFNAug/L 0.001Sampled Jun 2026 No limit 0.001 Total PFASug/L 0.005Sampled Jun 2026 ≤ 0.1 0.001 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 33.1 No limit 33.1 Uraniumug/L 0.2Sampled Jun 2026 No limit 0.2
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.
