Water Facts


Nearly 97% of the world's water is salty or otherwise undrinkable. Another 2 % is locked in ice caps and glaciers. That leaves just one percent for all of humanity'a needs - all its agricultural, residential, manufacturing, community and personal needs.

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.

75% of the human brain is water and 75% of a living tree is water.

A person can live a month without food, but only about a week without water.

Water is part of a deeply interconnected system. What we pour on the ground ends up in our water and what we spew into the sky ends up in our water.

The average total home use for each person is about 50 gallons a day.

Water expands by 9 % when it freezes. Frozen water (ice) is lighter than water, which is why ice floats in water.

Human blood is 83% water. Human bones are 25% water.

Each day, the sun evaporates a trillion tons of water.

In some deserts, rain is so uncommon that the natives do not have a word for it.

The koala bear and the desert rat do not drink water.

In a 100 year period, a water molecule spends 98 years in the ocean, 20 months as ice, about 2 weeks in lakes and rivers and less than a week in atmosphere.

* Special thanks to the American Water Works Association. Please visit their web site at www.awwa.org for additional information.


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