A bench headed by Justice T S Thakur said the issue of cleaning Ganga is very important and it has to be put on the front burner.
"Are you saving river Ganga? It was also there in your manifesto. Why don't you act on it?," the bench said, while referring to BJP's pre-poll promise to clean the river.
The bench then adjorned the matter asking the Centre to file affidavit within two weeks giving details about what it proposes to do for cleaning the river.
"In this matter you said there is urgency... Now there is no urgency for you. You are shuttling the issue between two ministries," the bench observed.
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On the last date of hearing on August 5, the case was adjourned as the Centre sought more time to file response.
The issue of cleaning up of river Ganga has been monitored by the apex court and several applications have been filed.
The unchecked pollution of river Ganga has evoked sharp criticism by the apex court which has been hearing the case since 1985.
The ambitious 'Ganga Action Plan' to clean the river was launched by the then Prime Minister Rajiv Gandhi in 1985.