Delhi’s vital water source, the Yamuna river, is facing a severe pollution crisis due to untreated effluents, biomedical waste and illegal dumping of construction debris (malba), posing an imminent threat, according to a comprehensive report from the parliamentary standing committee on water resources. The alarming findings shed light on the critical need for urgent interventions to protect the river’s health. The committee’s 27th report, titled ‘Review of Upper Yamuna River Cleaning Projects Up to Delhi and River Bed Management in Delhi’, reveals that the 22-km stretch of the Yamuna in Delhi is responsible for a staggering 75 to 80 per cent of the pollution in the entire river.