source of life
Water has an important role as homeostasis (body stability buffer). Water quality from day to day decreases. Water pollution is getting worse due to waste discharges from human activities.
About 2/3 of the earth's surface is water. Nearly 80% of the human body contains water. Can not be denied, the water is very dominating elements of life in the world.
Unfortunately, 97% of water in the world is not worth consuming because it is salty. Meanwhile, as much as 2% of fresh water is stored in snow and ice at the north and south poles. Only the remaining 1% can be consumed by living things. In reality living things lack water.