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COMMUNAUTE D'AGGLOMERATION BOURGES
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 0.16 No limit 0.032
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 29.9 No limit 29.9 Hardnessmg CaCO3/l 316.7 80 – 459 316.7 Hardness fF 31.7 No limit 31.7 pH 7.3 6.5 – 9.5 7.3 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 637 ≤ 2,500 637 TDSmg/l 407.7estimated 0 – 1,199 407.7 Alkalinitymg CaCO3/l 292.6 No limit 292.6 Bicarbonatemg HCO3/l 345Sampled Aug 2025 No limit 345
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 Cyanide totalμg CN/l 10Sampled Feb 2026 ≤ 50 0.5 Fluoridemg F/l 0.18Sampled Feb 2026 ≤ 1.5 0.054 Mercuryμg Hg/l 0.01Sampled Feb 2026 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 42.9 ● (Near the limit) ≤ 50 12.9
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 4.2Sampled Feb 2026 No limit 4.2 Calciummg/l 119.6Sampled Feb 2026 No limit 119.6 Potassiummg/l 1.9Sampled Feb 2026 No limit 1.9 Chloridemg/l 18.7 ≤ 250 18.7
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 10Sampled Feb 2026 ≤ 200 10 Antimonyμg/l 1Sampled Feb 2026 ≤ 5 1 Arsenicμg/l 2Sampled Feb 2026 ≤ 10 1 Bariumμg/l 142Sampled Feb 2026 ≤ 1,000 142 Cadmiumμg/l 1Sampled Feb 2026 ≤ 5 1 Chromiumμg/l 5Sampled Feb 2026 ≤ 50 5 Copperμg/l 18Sampled Jul 2026 ≤ 2,000 0.9 Ironμg/l 10 ≤ 200 10 Manganeseμg/l 10Sampled Feb 2026 ≤ 50 10 Leadμg/l 2Sampled Jul 2026 ≤ 10 0.1 Nickelμg/l 5Sampled Jul 2026 ≤ 20 5 Seleniumμg/l 2Sampled Feb 2026 ≤ 10 2 Sodiummg/l 7.4Sampled Feb 2026 ≤ 200 7.4
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Trichloroethyleneμg/l 0.1Sampled Feb 2026 No limit 0.005 Total Trihalomethanesμg/l 3.32Sampled Feb 2026 ≤ 100 0.17
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 1.3Sampled Feb 2026 ≤ 60 0.065
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Total pesticidesug/L 0.098Sampled Feb 2026 ≤ 0.5 0.098
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Feb 2026 ≤ 70 0.02 Atrazineug/L 0.005Sampled Feb 2026 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.001Sampled Feb 2026 No limit 0.001 PFOSug/L 0.001Sampled Feb 2026 No limit 0.001 PFNAug/L 0.001Sampled Feb 2026 No limit 0.001 Total PFASug/L 0.001Sampled Feb 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 9 No limit 9 Uraniumug/L 10Sampled Feb 2026 No limit 10
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.
