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Assessment of the Microbiological Quality of Drinking Water in Light of Water Quality in the Pelengana Commune of Segou Region

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Document pages: 11 pages

Abstract: This study focused to determine the bacteriological quality of differentcommonly used water sources, including boreholes, hand pumps, surface water,household containers, dug well and cement reservoirs in Pelengana commune, inMali with special reference to the internally displaced people camps. Fourhundred and eight water samples were collected from different sites andsources, from July 2016 to June 2017. Water samples were examined for totalcoliform, fecal coliform and fecal enterococci counts using the most probablenumber method. Also, samples were investigated for the presence of entericbacteria isolated, namely Escherichiacoli, Enterococcus fecalis, Bacillus, Citrobacter and Enterobacter.Results revealed that the three indicators bacteria (Total Coliform (48.7 ),Fecal Coliform (100 ), and Fecal enterococci (37.01 )) were found abovepermissible limit for drinking water. The highest number of the indicatorsbacteria found was 1800 TC 100ml water. Enteric bacteria isolated were Escherichia coli (25.7 ), Enterococcusfecalis (21.91 ), Bacillus (16.72 ), Enterobacter (4.56 ) and Citrobacter (3.91 ). The mostcontaminated water source was surface water (15.28 ) followed by householdcontainers (13.65 ), boreholes (8.75 ), cement reservoirs (7.47 ), hand pumps(5.31 ) and dug wells (2.7 ). These findings illustrate that contaminationvaried with seasons, and the highest level was observed in rainy season(30.02 ) compared to the dry season (23.14 ). All sources of water in the studysites were contaminated. It is suggested that the outright prevention ofsurface water consumption should be employed and monitoring of the quality ofwater resources is needed.

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