A bench of Acting Chief Justice Gita Mital and Justice C Hari Shankar posed the query to the governments' counsel, who opposed a PIL for a direction to clean the river, which has a 22 km stretch in Delhi.
The counsel submitted before the court that the National Green Tribunal was seized of the issue and monitoring it.
"What are your (governments) efforts? Have you complied it at the ground level," the bench observed, adding that why was a situation being created for a court to monitor the issue.
It listed the matter for September 13, by when it has asked advocate Anupam Tripathi, who filed the PIL, to find out whether a similar issue was pending before the NGT.
The advocate in his plea alleged that the 22 km stretch of the Yamuna has been declared ecologically dead.
The plea alleged that around Rs 6,500 crore has been spent for the revival of the river but the money has gone down the drain due to the "callous" approach of the authorities.
The Yamuna, which used to be home to various species like Ghariyal, Mugger Crocodile, Checkered Snakes, Indian soft shell turtles and dolphins, are nowhere seen now "due to the impossibility of sustenance of any marine life form in such a polluted water body".
"The quality of water of the 22 km stretch still remains highly polluted with absolutely no improvement in its water quality. It has been dying a slow and a painful death," the plea added.
Tripathi has also sought directions to the authorities to levy hefty fine on the defaulters who defy the directions and continue to pollute the river.
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