Environmentalists have alleged environmental degradation due to hill cutting, land filling, clearing of trees, vegetation in the Eco-Sensitive Zone (ESZ) of Sanjay Gandhi National Park (SGNP) between Powai and Vihar lakes. 

Stalin D from NGO Vanashakti has written a mail about the same to the Principal Secretary of the Maharashtra government; Collector—Mumbai Suburban; Deputy Conservator of Forests - Thane Forest Department; the municipal commissioner, Chief Conservator of Forests—Thane and SGNP director. Stalin’s email states the damage to the area and that the ESZ Monitoring Committee has not cleared any project of this nature there.