In March 2023, pollution levels in the Yamuna River, which flows through Delhi, increased compared to February, with faecal coliform levels rising to 400,000 MPN/100ml and biological oxygen demand (BOD) reaching 60 mg/l, indicating severe contamination. Despite these alarming figures, the situation has improved from March 2022, when faecal coliform peaked at 1.3 million units and BOD at 70 mg/l. Experts attribute the seasonal rise in pollution to reduced rainfall and environmental flow, which hampers the river's natural ability to dilute pollutants. Concerns were raised about sharp pollution peaks downstream of Wazirabad and the Najafgarh drain, with activists questioning the effectiveness of sewage treatment plants (STPs) in controlling effluents entering the river. The report underscores the ongoing ecological crisis, with the river deemed unfit for any use, highlighting the urgent need for improved pollution control measures in the region.