Tap Water ,water is the principal source of life,and we cannot live without it,because it is the most important element we have in land. We should protect rivers,lakes,mountains and all water sources that in the world exist. Drinking water is essential for us,the 65 percent of our human body is made up of this element. W e all need it for surviving. The water must pass through a purification process for us to consume it,because if we drink contamined water it could be detrimental to our health. Diseases caused by contamined water can even cause death. Authorities should give a googd treatment to the water we consume. if they don´,t do anything about it, we should select better authorities.