Sewage pollution has great impacts on water and sediment quality of an aquatic body which ultimately affects the all lives of the ecosystem. It is one of the major problems in cities. The sewage water is rained off into rivers without treatment. The careless disposal of sewage water leads to a chain of problems, such as spreading of diseases, eutrophication, increase in Biological Oxygen Demand (BOD), etc. The sewage contains water as the main component, while other constituents include organic wastes and chemicals.The present work is based on a case study carried out at the Rajakhali canal...