The agency collects samples at designated periods and assesses them for various parameters
The lockdown did not contribute to a “significant improvement” in water quality assessed in 19 major rivers of India, the Central Pollution Control Board has said in a report released on Wednesday. However nearly three in four water samples analysed met designated standards.
Previous analysis has shown that the lockdown helped majorly reduce air pollution in several cities.
Water samples were collected as part of the agency’s routine National Water Quality Monitoring programme, under which samples are collected at designated periods and assessed for parameters such as Biochemical Oxygen Demand (BOD, or the extent of microbial life); Dissolved Oxygen (DO, to judge the effect of organic pollutants), pH (acidity level), and faecal coliform (FC, or microbes from human and animal waste)….