Issues of rituals, waste & cremation in a closed, urban water system in this article, ‘Hindus Find a Ganges in Queens, to Park Rangers’ Dismay’: “He visited dozens of Hindu temples to discuss the area’s fragile ecosystem — how saris could strangle the sea grass, flowers could choke the birds, and fruit could disrupt the food chain.”

http://www.nytimes.com/2011/04/22/nyregion/hindus-find-a-ganges-in-queens-to-park-rangers-dismay.html