A bench of Justices Badar Durrez Ahmed and Siddharth Mridul also expressed concern over the fact that more than 500 million gallons per day (MGD) of sewage was being dumped in river Yamuna as only about 400 MGD of the 900 MGD sewage generated by the city reached sewage treatment plants (STPs) which only have a capacity of 604 MGD as per DJB.
"Delhi will be a cess pool by then (2031)," the bench said and asked what was happening in such areas where there was no sewer system.
The other questions raised by the court were how much sewage was generated by the city, how it would be treated, how much water would be generated after treatment, how much of the treated water would be reusable and potable, and what was the sewage treatment capacity of the city?
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It directed DJB to submit a progress report on the next date of hearing on October 21.
During the hearing, the bench observed that DJB would have
to do some proper planning to take care of the "many fold" increase in sewage generated once the 45 per cent of population was connected to sewerage facility.
DJB, meanwhile, submitted an affidavit stating that it has completed 84 per cent of the work regarding interceptor drains which would carry sewage to STPs and the entire work would be finished by March 2017.
On the issue of water supply to Delhi through Munak canal, the court was informed that water supply has stabilised after installation of the state-of-the-art water meters.
The meters were installed on the orders of the court.