waster water treatment and its reuse

Water is most important natural resource.We depends on water for irrigation, industrial use, domestic needs, shipping and for sanitation and disposal of waste.Most of our water bodies are ponds, lakes, streams, rivers, sea, oceans, have become polluted due to industrial growth, urbanisation and anthropogenic activities.Earth is proudly called as water plane.68.7% of fresh water on earth is found in icecaps and glaciers, 30.1% is found in groundwater, but the demand for it is continuously increasing.The amount of water which can be used for drinking are decreasing due to pollution.Pollution of water affects drinking water, lakes, rivers and oceans all over the world.Pollution water are harmful and unfit for use.Therefore it is very important to minimise the pollution and water crisis from the treatment of waste water and it's recycling.In this paper we are showing treatment of waste water and its reuse.