A water footprint is a person's total freshwater usage. This goes beyond
water used for drinking and bathing which is known as direct water usage.
Your water footprint also includes all the water that is involved with
manufacturing goods you use, growing (or raising) the food you eat, and
producing energy that powers your home. This "behind the scenes" and
much larger part is known as virtual water usage.
It's surprising how much water is used for trivial things that we take for
granted. When you drink a cup of coffee you might not realize that several
gallons of water went into growing and processing the beans, packaging them,
and shipping them to you. Many factors affect the water footprint of a product.
Vegetarian foods usually require less water overall than non-vegetarian foods.
Water is used to clean, and grow food throughout the lifetime of the animal
that becomes your next hamburger. More water is then needed to process, clean,
package, transport, and cook the meat.
Water is also required in the production of everyday products. The cotton in
the clothes you wear requires a lot of water to be grown. Afterwards, water is
required to process, package, ship the cotton and again to manufacture,
package, and ship the clothing.
▬ 1,800 gallons of water are involved the making of a simple pair of jeans.(1)
▬ 53 gallons of water are needed to make a latte.(2)
▬ 2,500-5,000 gallons are needed for one pound of beef.(3)
Keep in mind that as the standard of living rises for people throughout the
world, the demand for water intensive foods and products will also rise. But we'll still have to manage with the same water supply that we have now.
Helpful links
nationalgeographic.com
nationalgeographic.com
(3) http://www.treehugger.com/files/2009/06/from-lettuce-to-beef-whats-water-footprint-of-your-food.php
No comments:
Post a Comment