Water is processed in so many ways. The most common of them all is water purification; then followed by water heating, water softening, water distilling and reverse osmosis. So why does water have all this attention? Well, the answer is simple. Water is life! If water is scarce or non-existent, the human race will have a hard time living. No water means no life.
Some countries have less water like in Africa, so health problems arise. So many people try to build safe drinking water for them. There are a lot of charities making ways to deliver safe drinking water to these people; Not only to them but also in many other places affected by water scarcity.