Missouri Botanical Garden
Missouri Botanical Garden: Water Pollution
Water pollution occurs when a body of water is adversely affected due to the addition of large amounts of materials to the water. The sources of water pollution are categorized as being a point source or a non-source point of pollution....
CK-12 Foundation
Ck 12: Earth Science: Water Pollution
[Free Registration/Login may be required to access all resource tools.] Describes the sources of water pollution, such as municipal, industrial, and agricultural.