The water is one of the most precious resources in the world and without it the mankind cannot survive. Every single human being needs to drink water every day, because it contains all the salts and minerals that the body loses everyday; if the body does not consume water it may dehydrate.

Every time water is getting more and more expensive because tap water is unfit for consuption. Nowadays tap water contains high levels of chlorine and other chemicals harmful for health, mentioning all the bancteria and mud that common tap water may contain. That is the reason why the systems for water purification are getting more and more expensive, and the bottled water more and more expensive.