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COMMUNAUTE D'AGGLOMERATION BOURGES
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.13 ● (Near the limit) 0.2 – 1 0.003 ▲ Total Chlorinemg CL2/l 0.2 No limit 0.04
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 24 No limit 24 Hardnessmg CaCO3/l 362.4 80 – 459 362.4 Hardness fF 36.2 No limit 36.2 pH 7.4 6.5 – 9.5 7.4 TurbidityNTU 0.19 ≤ 4 0.019 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 610 ≤ 2,500 610 TDSmg/l 390.4estimated 0 – 1,199 390.4 Alkalinitymg CaCO3/l 266.2 No limit 266.2 Bicarbonatemg HCO3/l 300Sampled Aug 2025 No limit 300
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 Mar 2026 ≤ 50 0.5 Fluoridemg F/l 0.19Sampled Mar 2026 ≤ 1.5 0.057 Mercuryμg Hg/l 0.01Sampled Mar 2026 ≤ 1 0.001 Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 23.7 ≤ 50 7.11
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 15.8Sampled Mar 2026 No limit 15.8 Calciummg/l 69.1Sampled Mar 2026 No limit 69.1 Potassiummg/l 17.2Sampled Mar 2026 No limit 17.2 Chloridemg/l 17.3 ≤ 250 17.3
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 10Sampled Mar 2026 ≤ 200 10 Antimonyμg/l 1Sampled Mar 2026 ≤ 5 1 Arsenicμg/l 2Sampled Mar 2026 ≤ 10 1 Bariumμg/l 28Sampled Mar 2026 ≤ 1,000 28 Cadmiumμg/l 1Sampled Mar 2026 ≤ 5 1 Chromiumμg/l 5Sampled Mar 2026 ≤ 50 5 Copperμg/l 37Sampled May 2026 ≤ 2,000 1.85 Ironμg/l 10 ≤ 200 10 Manganeseμg/l 10Sampled Mar 2026 ≤ 50 10 Leadμg/l 2Sampled May 2026 ≤ 10 0.1 Nickelμg/l 5Sampled May 2026 ≤ 20 5 Seleniumμg/l 2Sampled Mar 2026 ≤ 10 2 Sodiummg/l 33.9Sampled Mar 2026 ≤ 200 33.9
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 11.9Sampled Mar 2026 ≤ 100 0.6
Haloacetic acids Haloacetic acids Parameter Unfiltered tap water Allowed range Filtered Total haloacetic acidsμg/l 4Sampled Mar 2026 ≤ 60 0.2
Pesticides Pesticides Parameter Unfiltered tap water Allowed range Filtered Total pesticidesug/L 0.058Sampled Mar 2026 ≤ 0.5 0.058
Herbicides Herbicides Parameter Unfiltered tap water Allowed range Filtered D 2 4ug/L 0.02Sampled Mar 2026 ≤ 70 0.02 Atrazineug/L 0.005Sampled Mar 2026 ≤ 3 0.005
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered PFOAug/L 0.011Sampled Jun 2026 No limit 0.011 PFOSug/L 0.029Sampled Jun 2026 No limit 0.029 PFNAug/L 0.001Sampled Jun 2026 No limit 0.001 Total PFASug/L 0.09 ● (Near the limit) Sampled Jun 2026 ≤ 0.1 0.009 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 37.7 No limit 37.7 Uraniumug/L 10Sampled Mar 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.
