Water covers 70% of the earth's surface. At least 97% of the world's water is salty and undrinkable. Another 2% of the earth's water is polluted, polar ice, or otherwise inaccessible and undrinkable. That leaves approximately 1% of the earth's water for humans to use.
On a daily basis, the people of the United States, directly and indirectly, use more than 380 billion gallons of water, or approximately 1,668 gallons per person.
The use of six gallons of gasoline per week requires 6,000 gallons of water for production. If you drink one canned beverage per day, the production of that can required 29,000 gallons of water.
- Denver Water Department