Aquatic Pollution and Coastal Management

2.1.Definition

Unit 2 : Sewage and domestic wastes, treatment and reuse

2.1.Sewage pollution
Sewage is defined as waste water/matter from domestic or industrial establishments that is carried away in sewers and drains.

Sewage pollution dates back to more than a century and during the late 19th century, marine systems have been considered as a sink for sewage disposal. By far ,the greatest volume of waste discharged to watercourses, estuaries and the sea is sewage, which is primarily organic in nature and subject to bacterial decay. Demographic pressure in the urban areas has resulted in the production of enormous quanties of domestic waste. It was estimated in 2007 that approximately 33,000 million liters of domestic sewage reaches the coastal environment of the country in a day.