A
report by Central Pollution Control Board (CPCB) submitted to National Green
Tribunal (NGT) on the city's sewage treatment shows why it is highly
unrealistic to expect a clean Yamuna anytime soon. The report states that
against a generation of 4,200 million litres a day (MLD) of waste water, about
1,951.67MLD is being treated while the rest is being discharged into the river
directly . The only time there is fresh water in the river is during the
monsoon, which effectively means that for the rest of the year, the river is
itself a huge drain. According to Status of Se wage Treatment Plants and Drains
of Delhi, “It was observed that during inspection, the Yamuna ends at Wazirabad
and the river virtually start with effluent of Najafgarh drain.“