Gallons and Gallons (A gallon of water weighs approximately 8.34 lbs.)We use water everyday and it is difficult to visualize the physical quantity because it is not used in one single sitting. We consume water all day long: it is running from a faucet, or swirling down a drain, or boiling noodles, or steeping tea, or bathing the dog, or showering after fixing a leaking section of the sprinkler system.
The average American individual consumes 80 - 100 gallons of water everyday.
If you would like a water usage estimate for your household click the link...USGS water science school