← Back to summary See all parameters HAUT DOLON PRINCIPALE · Saint-Barthélemy
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Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.05 ● (Near the limit) 0.2 – 1 0.001 ▲ Total Chlorinemg CL2/l 0.05 No limit 0.01
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 13.3 No limit 13.3 Hardnessmg CaCO3/l 224.6 80 – 459 224.6 Hardness fF 22.5 No limit 22.5 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 474 ≤ 2,500 474 TDSmg/l 303.4estimated 0 – 1,199 303.4 Alkalinitymg CaCO3/l 205 No limit 205
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 Jun 2025 ≤ 50 0.5 Fluoridemg F/l 0.05Sampled Jun 2025 ≤ 1.5 0.015 Mercuryμg Hg/l 0.01Sampled Jun 2025 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 25 ≤ 50 7.5
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 1.6Sampled Jun 2025 No limit 1.6 Calciummg/l 88.7Sampled Jun 2025 No limit 88.7 Potassiummg/l 1Sampled Jun 2025 No limit 1 Chloridemg/l 12 ≤ 250 12
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 10Sampled Jun 2025 ≤ 200 10 Arsenicμg/l 2Sampled Jun 2025 ≤ 10 1 Bariumμg/l 28Sampled Jun 2025 ≤ 1,000 28 Ironμg/l 10Sampled Jun 2025 ≤ 200 10 Manganeseμg/l 10Sampled Jun 2025 ≤ 50 10 Leadμg/l Not reported ≤ 10 — Seleniumμg/l 2Sampled Jun 2025 ≤ 10 2 Sodiummg/l 4.2Sampled Jun 2025 ≤ 200 4.2
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Jun 2025 No limit 0.005 Total Trihalomethanesμg/l 0.5Sampled Jun 2025 ≤ 100 0.025
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Heptachlorug/L 0.005Sampled Jun 2025 ≤ 0.4 0.005 Total pesticidesug/L 0.087Sampled Jun 2025 ≤ 0.5 0.087
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Jun 2025 ≤ 70 0.02 Atrazineug/L 0.012Sampled Jun 2025 ≤ 3 0.012
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Jun 2025 No limit 0.001 PFOSug/L 0.001Sampled Jun 2025 No limit 0.001 PFNAug/L 0.001Sampled Jun 2025 No limit 0.001 Total PFASug/L 0.028Sampled Jun 2025 ≤ 0.1 0.003 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 0.05 No limit 0.015 Sulfatemg/l 8.1 No limit 8.1
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.
