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Protection Agency (EPA), in its illustrated booklet “Your World, My World,” identifies the most important sources of water pollution across the U. S. as follows:
(1.) More than 1,416 communities discharge their sewage into waterways without any treatment what ever. And more than 2,300 communities use just primary treatment, which removes only 30 to 40 percent of some pollutants.
(2.) The largest amount and the most poisonous of pollutants come from industrial plants. There are about 240,000 plants that use water to carry away all kinds of chemical wastes.
(3.) Big oil spills from vessels and from offshore drilling have caused serious damage. In addition, smaller amounts, totaling thousands of barrels of oil, are wasted or spilled every day in streams and lakes across the country.
(4.) Huge feedlots, containing areas where thousands of cattle or other animals are fattened for market, cause a problem because animal wastes seep into the ground and get into the*water.
(5.) Fertilizer and pesticides run off from our
94.9%