Yamuna river pollution hits record high in Delhi: Faecal coliform levels soar in September

Faecal coliform levels in the Yamuna River peaked at 4,900,000 MPN/100 ml in September, hitting all-time highs despite improved dissolved oxygen and BOD levels from August rains. Major pollution sources include untreated sewage and ineffective sewage treatment plants, with severe contamination worsening downriver.