Relevance for life and distribution on the Planet

Water is a mineral, a simple chemical element (H₂O) fundamental for the planet. It is present in the whole world, in oceans, glaciers, lakes and rivers. Also covers ¾ of the Earth surface: one billion 340 million  cubic kilometers. Beneath the surface,  soaked inside  the soil, there are more four million cubic kilometers that go round rocks and caves, beyond to form wells and ground water. Furthermore, at the terrestrial atmosphere around the planet, there are five thousand cubic kilometers of water in the form of steam.

Without water, life as we know it would be impossible. All living beings evolution is related to and depends on  this precious liquid.

  Humankind development is  associated with the way civilizations use the water and during millenniuns human beings have considered this resource infinite. Just a few decades ago, humanity has awaken  to the fact that with  misuse and waste, natural resources  are becoming  scarce, and it is necessary to  end with a false idea about hydric resources  that portrays water as a inexhaustible  asset.  Nowadays, more than  1.1 billion people suffer  from lack of water. Although there is a  lot of water in our  Planet, most of it – 97.5% -  is in the oceans and is salt. Only 2.5% is proper for comsuption but is concentrated in  the polar regions, frozen.  For  the use in all kinds of human deployment of water remains  0.7% of  this Earth   resource, stored in the subsoil,  what makes it difficult to employ it.  Only  0.007% from all the water that exists in the world  is available on the Earth  surface, as lakes and rivers.