THE Yamuna river is showing some signs of improvement in its water quality. The levels of biological oxygen demand (BOD) in the Najafgarh drain evidenced a notable reduction of 33 percent, compared to the previous year, in May 2023. A lower BOD level signifies a decrease in organic pollutants and an overall healthier aquatic environment.
This drain contributes to approximately 70 percent of the wastewater discharge into the Yamuna in Delhi. The BOD value at Kashmere Gate dipped from 55 milligrams of oxygen per litre (mg/l) in May 2022 to 38 mg/l in May 2023. This indicates a. . .