Water as we all find out is a very valuable natural resource. One can stay of a month devoid of food, nevertheless it's difficult to survive for just a 1 week without water. This particular indispensable liquid constitutes with regards to 60% of our body large, 70% of our brain, plus 80% of our own blood. Even though it covers one-third portion of the earth, only 3% is fresh water, and out of that