The green panel, which had constituted a committee last December and asked it to submit action plan within three months, said the Uttarakhand government needs to work with greater "seriousness".
It expressed concern over the fact that two months have passed since the expiry of its order and neither any application has been filed for extension of time nor any step taken to enforce its order.
"One of the basic and fundamental source of pollution of river Ganga is discharge of untreated sewage into the river. If this is the attitude with which Uttarakhand proposes to deal with the matters of environment, much needs to be said as well as appropriate actions are required to be taken against the concerned authorities...," a bench headed by NGT chairperson Swatanter Kumar said.
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The matter is now listed for next hearing on July 4.
The NGT on December 10 last year constituted a committee
to prepare a complete and comprehensive action plan for installing Sewage Treatment Plants, biodigestors and collective septic tanks for collecting sewage of entire Ram Nagar while ensuring that no sewage or untreated sewerage is released into Kosi.
"A specific report on physical inspection has to be conducted through employees of the respective bodies and the report will state as to how many houses are without septic tanks. It would also state that the houses which have constructed septic tanks, if there is any mechanism to collect such sewerage and its treatment as per law," the bench had said in its order.