← Back to summary See all parameters HOUPPEVILLE · Bois-Guillaume
EAUX DE NORMANDIE
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.43 0.2 – 1 0.009 ▲ Total Chlorinemg CL2/l 0.45 No limit 0.09
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 25 No limit 25 Hardnessmg CaCO3/l 300 80 – 459 300 Hardness fF 30 No limit 30 pH 7.2 6.5 – 9.5 7.2 TurbidityNTU 0.2 ≤ 4 0.02 ConductivityμS / cm 638 ≤ 2,500 638 TDSmg/l 408.3estimated 0 – 1,199 408.3 Alkalinitymg CaCO3/l 275 No limit 275
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 22.5 ≤ 50 6.75
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Chloridemg/l 16.9 ≤ 250 16.9
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Antimonyμg/l 0.5Sampled Jun 2025 ≤ 5 0.5 Arsenicμg/l Not reported ≤ 10 — Cadmiumμg/l 0.1Sampled Jun 2025 ≤ 5 0.1 Chromiumμg/l 1.6Sampled Jun 2025 ≤ 50 1.6 Copperμg/l 20.3Sampled Jun 2026 ≤ 2,000 1.02 Ironμg/l 5Sampled Jun 2025 ≤ 200 5 Leadμg/l 0.62Sampled Jun 2026 ≤ 10 0.031 Nickelμg/l 0.5Sampled Jun 2026 ≤ 20 0.5
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 0.02 No limit 0.006 Sulfatemg/l 8.58 No limit 8.58
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.
