← Back to summary See all parameters VERNIOZ PRINCIPAL · Saint-Barthélemy
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Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.22Sampled May 2026 0.2 – 1 0.004 ▲ Total Chlorinemg CL2/l 0.25Sampled May 2026 No limit 0.05
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 25.8 No limit 25.8 Hardnessmg CaCO3/l 204.3 80 – 459 204.3 Hardness fF 20.4 No limit 20.4 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 425 ≤ 2,500 425 TDSmg/l 272estimated 0 – 1,199 272 Alkalinitymg CaCO3/l 242.5 No limit 242.5
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 Mercuryμg Hg/l Not reported ≤ 1 — Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 9.2 ≤ 50 2.76
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Chloridemg/l 8.8 ≤ 250 8.8
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Antimonyμg/l 1Sampled Aug 2025 ≤ 5 1 Arsenicμg/l Not reported ≤ 10 — Cadmiumμg/l 1Sampled Aug 2025 ≤ 5 1 Chromiumμg/l 5Sampled Aug 2025 ≤ 50 5 Copperμg/l 52Sampled Jun 2026 ≤ 2,000 2.6 Leadμg/l 2Sampled Jun 2026 ≤ 10 0.1 Nickelμg/l 5Sampled Jun 2026 ≤ 20 5
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered Total PFASug/L Not reported ≤ 0.1 — 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 0.03 No limit 0.009 Sulfatemg/l 8.5 No limit 8.5
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.
