Water pollution and scarcity are two serious problems living organisms are facing currently. Out of which Water scarcity is in some areas but Water pollution is everywhere. If we consider India only, as almost 70% of surface water resources and growing percentage of its groundwater reserves are polluted by biological, toxic, organic and inorganic pollutants. If we observe closely we can easily find out that these two problems are directly interdependent. And day by day these problems are seriously affecting entire ecosystem. In most cases, these sources have been rendered unsafe from households as well as industrial waste. This shows that degraded water quality can contribute to water scarcity because it limits it’s availability for both human use and ecosystem. Waste water and solid waste disposal are the problems among the other environmental problems which urban and semi-urban areas are facing. These wastes ranges from household waste to animal & human excreta to industrial waste material etc. The time has come to take serious action so that we can make this planet exists and that too in better condition for the generations to come.This needs awareness at individual side as well as collective side. The local public authorities can play a crucial role in this. They must develop proper system to collect, treat and dispose all waste products. There are several techniques used to treat domestic wastewater. These can be broadly classified into two groups, Conventional and Non-Conventional Treatment Plants.