A vacation bench of Justice Dalip Singh and Expert Member Ranjan Chatterjee said the case lacked merit.
The plea, moved by two law students from a private university in Gurgaon, had alleged that a woman BJP MP from Uttar Pradesh threw a plastic bottle in the river, a tributary of the Ganga, in the presence of a minister in the Yogi Adityanath government.
The plea was based on media reports which said that the woman MP, who was with the minister during the June 2 inspection of an embankment on the Saryu, tossed a plastic water bottle into the river.