← Back to summary See all parameters BOEN SUR LIGNON · Sainte-Agathe-la-Bouteresse
CA LOIRE FOREZ AGGLOMÉRATION
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.11 ● (Near the limit) 0.2 – 1 0.002 ▲ Total Chlorinemg CL2/l 0.18 No limit 0.036
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 18.5 No limit 18.5 Hardnessmg CaCO3/l 38.2 ● (Near the limit) 80 – 459 38.2 ● Hardness fF 3.82 No limit 3.82 pH 6.6 6.5 – 9.5 6.6 TurbidityNTU 0.27 ≤ 4 0.027 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 137 ≤ 2,500 137 TDSmg/l 87.7estimated 0 – 1,199 87.7 Alkalinitymg CaCO3/l 45 No limit 45
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0 ≤ 0 0 eColiUFC/100ml 0 ≤ 0 0 BacteriasNMP/100ml 0Sampled Apr 2026 ≤ 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 6.8 ≤ 50 2.04
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 2.6 No limit 2.6 Calciummg/l 11 No limit 11 Chloridemg/l 14.5 ≤ 250 14.5
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Antimonyμg/l 1Sampled Jul 2025 ≤ 5 1 Arsenicμg/l Not reported ≤ 10 — Cadmiumμg/l 1Sampled Jul 2025 ≤ 5 1 Chromiumμg/l 5Sampled Jul 2025 ≤ 50 5 Ironμg/l 13Sampled Jul 2025 ≤ 200 13 Leadμg/l Not reported ≤ 10 —
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Total Trihalomethanesμg/l 8.99 ≤ 100 0.45
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 6.1 No limit 6.1
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.
