1 pound of beef requires 1,799 gallons of water. 1 gallon of wine requires 1,008 gallons of water. A 0.3 pound burger requires 660 gallons of water. 1 slice of bread requires 11 gallons of water. 1 apple requires 18 gallons of water. 1 pound of chocolate requires 3,170 gallons of water. 500 sheets of paper requires 1,321 gallons of water.