At present, the need for water, food and energy conservation has become an important topic of discussion not only in the world but also in India. Which has attracted the attention of not only the public but also the government. Increasing industrialization and urbanization has made the matter even more serious. Wastewater is generated after the use of fresh water, drinking water or brackish water in a variety of applications, which needs proper management. If we talk about waste water management, most of the waste water coming out of the houses is used in sewerage water. Reuse of wastewater is limited to agricultural and industrial purposes. Waste water is generated due to industrial, commercial and agricultural activities, sewer inflow etc. The water released from wastewater treatment plants is also mostly confined to agricultural and industrial purposes. In developed countries, waste water is not such a big problem because there are means of its management and the government and public are also more aware of it. But in developing countries like India, wastewater has adverse effects on human health and environment. Waste water is used directly in agriculture without treatment, which has serious consequences. Today, increasing population, urbanization and modernity have encouraged the use of water, day by day the amount of unusable water coming out from homes, factories etc is increasing. In view of the paucity of potable useful water, it has become necessary to convert the waste water into useful water. This will not only reduce the scarcity of water, but also the damage caused to the environment by dirty , smells and chemical -laden water can be avoided.  In this research paper, we will throw light on the types of waste water, their treatment methods, treatment plants in India, treatment projects, benefits of treatments etc.

Keywords: Wastewater, Domestic Water, Industrial Water, Agricultural Water, Urbanization, Sewerage Water. Wastewater Treatment.