What percent of the world is water?
More than ¾ of the world is covered with water- but only 1% of this supply can be used for drinking. The rest is salty or trapped as polar ice.
All information taken from “About
Safe Drinking Water,” A SCRIPTOGRAPHIC BOOKLET by CHANNING L BETE CO., INC.,
South Deerfield, MA 01373 U.S.A. © 1988 All rights reserved.