A bench headed by NGT Chairperson Justice Swatanter Kumar also directed DJB to provide details of planned expenditure in the current fiscal with regard to water and sewage sector.
"Why Delhi Gate drain was not properly planned? You had assured us that not a single drop of untreated water will go into Yamuna. Still 25 to 30 per cent of waste water is going into Yamuna. We will not allow you to waste public money like this. Enough of this joke," the bench said while monitoring the implementation of its 'Maili se Nirmal Yamuna Revitalisation Project'.
According to DJB, the plant, which is odourless and functions on clean fuel, has been constructed at a cost of Rs 204 crore. The waste water treatment plant aims to Tap highly polluted water from Old Delhi areas.
The tribunal had earlier taken DJB to task for spending money on Yamuna without its permission and directed it not to spend a "single penny" on rejuvenation of the river without its approval.