In our country, total usable fresh water is only 1120 cubic kilometers annually. The estimated annual requirement of freshwater for the year 2025 has been estimated as 1050 cubic kilometers, which is just sufficient to meet the demand of the country by that time. We have to save the water for future and recycling of sewage is the best option to maintain the quality and quantity of water.r water courses. The value of water for irrigation is additional 490 million rupees.

It has clear that sewage is a valuable resource. If we wish to clean our environment, depollute our rivers, reduce the risk of water-borne diseases and to have economic stability, it is essential that all the sewage should be collected, treated and recycled properly. It is the only way to improve the crop yield and reduce the risks of water scarcity.