← Back to summary See all parameters LASSAY · Madré
SIAEPAC DE LA FONTAINE ROUILLEE
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.05 ● (Near the limit) 0.2 – 1 0.001 ▲ Total Chlorinemg CL2/l 0.09 No limit 0.018
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 23.6 No limit 23.6 Hardnessmg CaCO3/l 199 80 – 459 199 Hardness fF 19.9 No limit 19.9 pH 7.5 6.5 – 9.5 7.5 TurbidityNTU 0.3 ≤ 4 0.03 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 484 ≤ 2,500 484 TDSmg/l 309.8estimated 0 – 1,199 309.8 Alkalinitymg CaCO3/l 150 No limit 150 Bicarbonatemg HCO3/l 179Sampled Jun 2026 No limit 179
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0Sampled Mar 2026 ≤ 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 Cyanide totalμg CN/l 5Sampled Mar 2026 ≤ 50 0.25 Fluoridemg F/l 0.24Sampled Mar 2026 ≤ 1.5 0.072 Mercuryμg Hg/l 0.01Sampled Mar 2026 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 0.5 ≤ 50 0.15
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 10.5Sampled Jun 2026 No limit 10.5 Calciummg/l 55Sampled Jun 2026 No limit 55 Potassiummg/l 2Sampled Jun 2026 No limit 2 Chloridemg/l 23.4 ≤ 250 23.4
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 2Sampled Mar 2026 ≤ 200 2 Antimonyμg/l 0.1Sampled Mar 2026 ≤ 5 0.1 Arsenicμg/l 0.2Sampled Mar 2026 ≤ 10 0.1 Bariumμg/l 84Sampled Mar 2026 ≤ 1,000 84 Cadmiumμg/l 0.02Sampled Mar 2026 ≤ 5 0.02 Chromiumμg/l 0.4Sampled Mar 2026 ≤ 50 0.4 Copperμg/l 4.4Sampled Jun 2025 ≤ 2,000 0.22 Ironμg/l 5 ≤ 200 5 Manganeseμg/l 0.5 ≤ 50 0.5 Leadμg/l 0.4Sampled Jun 2025 ≤ 10 0.02 Nickelμg/l 0.8Sampled Jun 2025 ≤ 20 0.8 Seleniumμg/l 0.2Sampled Mar 2026 ≤ 10 0.2 Sodiummg/l 22.5Sampled Jun 2026 ≤ 200 22.5
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Mar 2026 No limit 0.005 Total Trihalomethanesμg/l 0.64Sampled Sept 2025 ≤ 100 0.032
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Chlordaneug/L 0Sampled Mar 2026 ≤ 2 0 Heptachlorug/L 0.001Sampled Mar 2026 ≤ 0.4 0.001 Total pesticidesug/L 0Sampled Mar 2026 ≤ 0.5 0
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Mar 2026 ≤ 70 0.02 Atrazineug/L 0.01Sampled Mar 2026 ≤ 3 0.01
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Mar 2026 No limit 0.001 PFOSug/L 0.002Sampled Mar 2026 No limit 0.002 PFNAug/L 0.001Sampled Mar 2026 No limit 0.001 Total PFASug/L 0Sampled Mar 2026 ≤ 0.1 0 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 64.7 No limit 64.7 Uraniumug/L 0.06Sampled Mar 2026 No limit 0.06
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.
