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SOCIETE GUYANAISE DES EAUX
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 0.05 No limit 0.01
General General Parameter Unfiltered tap water Allowed range Filtered Hardnessmg CaCO3/l 81 80 – 459 81 Hardness fF 8.1 No limit 8.1 pH 7.3 6.5 – 9.5 7.3 TurbidityNTU 3 ≤ 4 0.3 ColorColor Units 10 ≤ 15 10 ConductivityμS / cm 177 ≤ 2,500 177 TDSmg/l 113.3estimated 0 – 1,199 113.3 Alkalinitymg CaCO3/l 80 No limit 80
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 37 ≤ 0 3.7 eColiUFC/100ml 10 ≤ 0 1 BacteriasNMP/100ml 10 ≤ 0 1 EnterococcusUFC/100ml 18 ≤ 0 1.8
Chemical parameters Chemical parameters Parameter Unfiltered tap water Allowed range Filtered Mercuryμg Hg/l Not reported ≤ 1 — Nitritesmg NO2/l 0.05 ≤ 0.5 0.02 Nitratesmg NO3/l 1.08 ≤ 50 0.32
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Chloridemg/l 5.46 ≤ 250 5.46
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 50 ≤ 200 50 Arsenicμg/l Not reported ≤ 10 — Ironμg/l 362 ▲ (Outside the range) ≤ 200 362 ▲ Manganeseμg/l 169 ▲ (Outside the range) ≤ 50 169 ▲ Leadμg/l Not reported ≤ 10 —
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Total Trihalomethanesμg/l 0.05 ≤ 100 0.003
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 0.05 No limit 0.015 Sulfatemg/l 1.35 No limit 1.35
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.
