Today and every day we help people protect our world's precious water. In celebration of World Water Day, we thank our LogoWear partners who have prevented over 11,240 lbs of pesticides from polluting 24,521,564 gallons of water. Before you buy another t-shirt, please learn more.. Cotton is the most world's most heavily treated crop. Polyester is a primary source of micro-plastic pollution in our Great Lakes, rivers, and oceans.