1. Chocolate (1kg) - 24 000 Liters
2. Beef (1kg) - 15 500 Liters
3. Cheese (1kg) - 5 000 Liters
4. Pork (1kg) - 4 800 Liters
5. Olives (1kg) - 4 400 Liters
6. Chicken (1kg) - 3 900 Liters
7. Rice (1kg) - 3400 Liters 

Analysing in deep the production of beef, and the reason behind so many water is spend, it's mainly because of the production of the food for the animals. It takes an average of three years before the animal can be slaughtered to produce 200 pounds of boneless meat. In this period, the animal consumes 1 300 pounds of grain (wheat, oats, barley, corn, peas, soy flour, and other grains), 7,200 pounds of fiber (pasture, straw), 24 cubic meters of drinking water and 7 meters cubic meters of water for other care. Than, to produce 1 pound of boneless meat, we use about 6.5 pounds of grain, 36 pounds of fiber and 155 liters of water. In addition, feed production requires an average of 15 300 liters of water. This give us the total o 15 500 liters!
 In this method, we do not include the volume of polluted water that may originate from the use of fertilizer to produce the ratio or excess manure that reaches the water system.

It is impossible to make a water footprint of zero because it takes water to make just about everything we choose to buy, eat, use and throw away, but, individual we can take daily decisions that might seem small, but cumulatively can have a great impact.