What is Water?

Water is a molecule that consists of two hydrogen atoms and one oxygen atom. When these atoms are heated to a high temperature, they join to form water. The scientific way to write this molecule is "H²O." Since most of the water on earth was created when the earth was forming, the water you are drinking today may have been a drink for a dinosaur or maybe a part of Cleopatra's bath water!
Source: http://www.ci.phoenix.az.us/WATER/wtrwhat.html

So what is 'drinking water'?

• Drinking water is any water supplied for the purpose of human consumption or domestic use.
• This water comes from several different sources including:
  • Ground water from private and municipal wells
  • Surface water from rivers and lakes.

Source: http://www.in.gov/idem/4564.htm