Only 3% of the fresh water available in the earth crest,quenches the thirst of every living organisms in the world.
Even the 3% of fresh water is under threat, due to the pollution of many kinds,like improper sewage,sanitation and contaminations of all kinds. Due to this Hundreds and thousands of poeple including kids, die because of contaminated water.
These can be avoided by the purification methods
the most popular and economical method are Activated Carbon (AC), Reverse Osmosis (RO), Ultraviolet Radiation (UV), Ion Exchange (IEX) and Distillation or Demineralization (DI).There are many methods for purification ,but make sure that, nature cannot be replaced by, any mechanical device.
So,it is necessary to harvest rain water and make this earth green ,greener,greenest...
