Description : The Buriganga river inflicted with litters from Dhaka city. According to the Department of the Environment (DoE), about 4500 tons of solid waste from city dwellers and 20,000 tons of tannery waste, including some highly toxic materials are released into the river every day. Nearly 4 million people of the city are exposed to the consequences of water pollution every day. Dhaka, Bangladesh. June 4, 2007.