How Water Works - Water Facts

  • Although the average person can live for about one month without food, we can only survive about a week without water
  • The average total home water use for each person in the U.S. is about 50 gallons per day
  • The human brain is 75% water; a living tree is also 75% water
  • There is the same amount of water on Earth as there was when the Earth was formed. The water from your faucet could contain molecules that dinosaurs drank
  • Water expands by 9% when it freezes. Frozen water (ice) is lighter than water, which is why ice floats in water
  • Water is composed of two elements: hydrogen and oxygen. Two hydrogen plus one oxygen = H2O
  • Water regulates the Earth's temperature. It also regulates the temperature of the human body, carries nutrients and oxygen to cells, cushions joints, protects organs and tissues, and removes wastes
  • What we do to the environment affects the quality of our drinking water. What we pour on the ground will end up in our water, what we spray into the air will also end up in our water