28. Evaluation of microbial load in drinking water from different areas of Peshawar

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Arshad Hussain, Zia ur Rahman, Salma Iman


Houses, office buildings, commercial businesses, markets, and schools all have water reservoirs. This drinking water has the capabilities to produce waterborne epidemics, particularly in vulnerable and immune-compromised individuals. The aim of this study is to determine the water quality of different localities in district Peshawar. Water pollution may result from water pipe leaks with sewage, a close proximity of septic tanks or any of a number of other factors like runoff, infiltration of waste water and direct deposition of waste through leaks. For this purpose, 120 different sites at Peshawar were selected for sampling of drinking water. The bacteriological quality assessment study is carried out by determining Total Plate Count (TPC), Total Coliform (TC) and Fecal Coliform (FC). Data reveals that out of 120 samples, due to high TPC, TC, and FC levels, 44 No of samples were contaminated. Total coliforms were found in 37 percent of the samples, while fecal coliforms were found in 22 percent of the samples. TPC concentrations ranged from 20 to 1060 cfu/ml. TC were found in the range 1.1 - 9.2 MPN / 100ml. The data shows that 66 samples have higher TPC values than the permissible limits of WHO standards for drinking water. The findings highlighted the need to take sewerage contamination of drinking water seriously as an issue for both the environment and human health.

Keywords: CFU; Drinking water; FC; MPN; TC; TPC; WHO


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