| 4 | Bacteriological and Physicochemical Quality of Groundwater of Mbankomo Municipality(Center Region,Cameroon)显示文摘A study to evaluate the physico-chemical and bacteriological quality of groundwater was carried out in the commune of Mbankomo(Centre-Cameroon)at 4 wells and 4 springs during the period from March to August.The physico-chemical parameters were measured by the standard method.Indicator bacteria of fecal contamination,namely HAB(Heterotrophic Aerobic Bacteria),total and faecal coliforms(Escherichia coli),and faecal streptococci were isolated by the surface spreading technique on PCA(Plate Count Agar),Endo and BEA(Bile Esculin Azide)agar respectively,and sulphite-reducing clostridia by the incorporation method on Tryptone Sulfite Cycloserine(TSC)agar.From a physico-chemical point of view,the groundwater in Mbamkomo is characterized by an average temperature(24.24±0.24°C);it is polluted with organic matter,acid and poorly mineralized.It was noted from a bacteriological point of view that these waters have a high and varied bacterial load with an average value of 100.8 × 10^(5) CFU/100 mL for coliforms,16.3 × 10^(5) CFU/100 mL for fecal streptococci,5.6 × 10^(5) CFU/100 mL for Escherichia coli and 4.8 ×10^(²)CFU/100 mL for Clostridium perfringens.These concentrations are all higher than the WHO(World Health Organization)standards which are set at 0 CFU/100 mL for coliforms,fecal streptococci and Clostridium perfringens and indicate fecal pollution of these waters.Escherichia coli cell densities were significantly correlated with dissolved oxygen in the water(r=0.510;p<0.05).The degradation of the quality of these waters is favored by their proximity to pollution sources,poor maintenance and poor protection of the wells.These waters,without any treatment,are not recommended for human consumption according to the standards of the WHO. | Murielle Patricia Mabou Tokam Antoine Tamsa Arfao Fils Mamert Onana Ernest Koji Vanelle Lontchi Segnou Yves Poutoum Yogne Awawou Manouore Njoya Ornel Kadji Tchantcha Ahmadou Fadimatou Sylvie Chinche Belengfe Edith Brunelle Mouafo Tamnou Moïse Nola | 2023 | Journal of Environmental Science and Engineering(B)2023，12，3： | 0 |
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