An assessment of removal efficiency for the bacterial pathogens in Mysore urban water treatment system, Karnataka, India—A case study

Abstract

AbstractThe present study mainly aims to determine whether the water treatment process is microbiologically feasible to reduce the microbial load and safe for consumption. The work was focused on four water treatment plants (WTP’s) supplying drinking water to Mysore urban city (Karnataka, India). A total of 144 samples were collected and analyzed during three seasons (December 2011 to August 2013) for microbiological and physico-chemical parameters. Water samples were collected from different stages of treatment such as raw water, stage-1 (coagulation/flocculation/sedimentation), stage-2 (filtration), and finally water from four WTP’s. In this study most probable number method to assess the microbiological water quality and heterotrophic plate count (HPC) was used to assess microbial load reduction in different stages of treatment. The result of the study indicates that treated water samples pH values were within the permissible range of World Health Organization (WHO). The reduction of turbidity for trea...