In this study, we assessed the efficiency and effectiveness of the Vrishabhavathy Valley Treatment plant (VVTP) in Bengaluru city, which is the oldest STP in the city. Since VVTP treats both raw sewage and polluted river water, with the latter constituting 80% of the influent, we sampled water quality at locations upstream and downstream of the plant to evaluate overall efficacy as well.

Water is one of the most important precious natural resources required essentially for the survival and health of living organisms. Tungabhadra River is an important tributary of Krishna. It has a drainage area of 71,417 sq km out of which 57,671 sq. km area lies in the state of Karnataka. The study was conducted to measure its
various physico-chemical and bacteriological parameters including levels of algal community. Pollution in water bodies may indicate the environment of algal

The present study has been undertaken to evaluate the performance of wastewater treatment systems (WWTS) in three different districts (Kolkata, Howra and Hugli) in West Bengal, India. Performance of these wastewater treatment plants are essential parameter to be monitored as the treated effluent is discharged into River Ganga which is the National River of India. The performance evaluation will also help for the better understanding of design and operating difficulties in wastewater treatment plants.