Abstract
Abstract Access to safe drinking water is one of the basic human rights and is essential to human health. The present study investigated the concentration of pathogenic microbial flora and health risk in drinking water samples in households of Bangalore city, Karnataka, India. The samples were analysed for microbiological and physico-chemical parameters. In this study, most probable number and heterotrophic plate count were used to assess the microbial load. The results of the study show that most of the household water samples were contaminated with the presence of coliform bacteria. The dominant bacterial species are Escherichia coli, Salmonella, Shigella, Klebsiella and Enterobacter. The bacteria belonging to the family Enterobacteriaceae showed maximum occurrence in water samples. The overall results of the study showed that the consumption of such contaminated drinking water at the end-user point may cause potential health hazards to the inhabitants.
Highlights
Access to safe drinking water is one of the basic human rights and is essential to human health (Hall et al )
The result of the study shows that most of the household water samples were contaminated with coliform bacteria
The microbiological and physico-chemical parameters of water samples were compared to the water quality guidelines of CPHEEO ( ), BIS ( ) and WHO ( )
Summary
Access to safe drinking water is one of the basic human rights and is essential to human health (Hall et al ). An adequate supply of safe drinking water is one of the most challenging tasks in many developing countries (Ouf et al ). With the increasing urban population and expansion of urban areas, many city managers are facing the problem of providing an adequate quantity and quality of water (McDonald et al ). Proper sewerage systems remain challenging tasks for many in urban areas (Wankhade ). This situation could be a potential threat to the health of citizens. This problem is more serious in India where the rate of urban growth is higher (George )
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