water pollution

2. the quality of being cloudy, opaque, or thick with suspended matter.
3. made up of fine particles
5. a substance that pollutes something, especially water or the atmosphere
6. occurs when runoff from rain and snowmelt carries pollutants into waterways such as rivers, streams, lakes, wetlands, and even groundwater
8. excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.
10. The reduction in the concentration of dissolved oxygen in water, especially as a result of pollution

1. the process where too many nutrients, mainly nitrogen and phosphorus, are added to bodies of water and can act like fertilizer, causing excessive growth of algae.
4. any single identifiable source of pollution from which pollutants are discharged
7. occurs when harmful substances—often chemicals or microorganisms—contaminate a stream, river,lake,ocean,aquifer
9. establishes the basic structure for regulating discharges of pollutants into the waters of the United States