Earth Day is celebrated each year on April 22nd. The Vegetarian Resource Group has a terrific brochure to show others about how much water is used to produce meat versus vegetarian food. The brochure is called Save Our Water – The Vegetarian Way.
See: http://www.vrg.org/environment/water_brochure.php
See Spanish translation of this brochure here: http://www.vrg.org/environment/water_brochure_spanish.php