← Back to summary See all parameters PONT AUTHOU · Boisney
SERPN (ROUMOIS / PLATEAU NEUBOURG)
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.21 0.2 – 1 0.004 ▲ Total Chlorinemg CL2/l 0.25 No limit 0.05
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 23 No limit 23 Hardnessmg CaCO3/l 305 80 – 459 305 Hardness fF 30.5 No limit 30.5 pH 7.7 6.5 – 9.5 7.7 TurbidityNTU 0.3 ≤ 4 0.03 ConductivityμS / cm 710 ≤ 2,500 710 TDSmg/l 454.4estimated 0 – 1,199 454.4 Alkalinitymg CaCO3/l 265 No limit 265
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 Mercuryμg Hg/l Not reported ≤ 1 — Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 48.7 ● (Near the limit) ≤ 50 14.6
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Chloridemg/l 34.4 ≤ 250 34.4
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Antimonyμg/l 0.5Sampled Jul 2025 ≤ 5 0.5 Arsenicμg/l Not reported ≤ 10 — Cadmiumμg/l 0.1Sampled Jul 2025 ≤ 5 0.1 Chromiumμg/l 0.55Sampled Jul 2025 ≤ 50 0.55 Ironμg/l 5Sampled Jul 2025 ≤ 200 5 Leadμg/l Not reported ≤ 10 —
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 0.01 No limit 0.003 Sulfatemg/l 13.7 No limit 13.7
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.
