Fun Facts & Figures About Water

1 acre-foot = 325,851 gallons (One acre-foot serves a family of four for one year)

1 cubic-foot = 7.48 gallons

1 cubic feet per second (cfs) = 450 gallons per minute, 646,320 gallons per day

1 gallon = 8.34 lbs

The earth's water supply is:

97.2% salt water

2.8% fresh water ( 0.6% groundwater, 0.01% lakes & streams, 2.2% glaciers &

ice caps, 0.001% water vapor)

On average, each day we use:

9-12 gallons per shower or bath

4-7 gallons per toilet flush

2-5 gallons to brush our teeth

8-13 gallons to wash dishes by machine

35-50 gallons per load of laundry

It takes this much water to produce one serving of:

Tomato (medium) = 8 gallons

Lettuce (1 cup) = 3 gallons

Orange (small) = 14 gallons

Pasta (2oz) = 36 gallons

White bread (1 slice) = 11 gallons

Cheese (1oz) = 56 gallons

Plain yogurt (1 cup) = 88 gallons

Butter (.36oz) = 46 gallons

Egg (1) = 63 gallons

Chicken (8oz) = 330 gallons

Hamburger (4oz) = 616 gallons

Steak (8oz) = 1,232 gallons

Irrigated agriculture uses an average of 2.5 to 3 acre-feet of water per acre.

Fun facts & figures provided by Water Education Foundation,
717 K Street Suite 517, Sacramento, CA 95814.