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.

获得安全饮用水是基本人权之一，对人类健康至关重要。本研究调查了印度卡纳塔克邦班加罗尔市家庭饮用水样品中的致病微生物菌群浓度和健康风险。分析样品的微生物学和理化参数。在这项研究中，最可能的数量和异养菌板数用于评估微生物负荷。研究结果表明，大多数家庭用水样本都被大肠菌污染。优势细菌种类是大肠杆菌，沙门氏菌，志贺氏菌，克雷伯菌和肠杆菌。属于肠杆菌科的细菌在水样中显示出最大的发生率。研究的总体结果表明，在最终用户点饮用受污染的饮用水可能会对居民造成潜在的健康危害。