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MAIRIE DE FONTRIEU
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.12 ● (Near the limit) 0.2 – 1 0.002 ▲ Total Chlorinemg CL2/l 0.15 No limit 0.03
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 14 No limit 14 Hardnessmg CaCO3/l 21 ● (Near the limit) 80 – 459 21 ● Hardness fF 2.1 No limit 2.1 pH 8.39 6.5 – 9.5 8.39 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 96 ≤ 2,500 96 TDSmg/l 61.4estimated 0 – 1,199 61.4 Alkalinitymg CaCO3/l 38.5 No limit 38.5
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 2.45 ≤ 50 0.74
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 2 No limit 2 Calciummg/l 5.1 No limit 5.1 Chloridemg/l 3.8 ≤ 250 3.8
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Antimonyμg/l 1Sampled Jan 2025 ≤ 5 1 Arsenicμg/l Not reported ≤ 10 — Cadmiumμg/l 1Sampled Jan 2025 ≤ 5 1 Chromiumμg/l 5Sampled Jan 2025 ≤ 50 5 Copperμg/l 410Sampled Jan 2025 ≤ 2,000 20.5 Ironμg/l 10Sampled Jan 2025 ≤ 200 10 Leadμg/l 3Sampled Jan 2025 ≤ 10 0.15 Nickelμg/l 5Sampled Jan 2025 ≤ 20 5
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Total Trihalomethanesμg/l 0.69Sampled Oct 2025 ≤ 100 0.035
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 2.2 No limit 2.2
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.
