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Water Quality words
Term | Definition |
---|---|
Potable Water | drinking water |
Safe Water | water that can be use for bathing or cleaning |
Contaminant | a substance that contaminates another substance, the air, water, land,etc. |
Substrate | the use of water as a substance for organisms to grow and live |
Dissolved Oxygen (DO) | oxygen found dissolved in water |
pH | a measure of how acidic or basic water is |
nitrates | compounds of nitrogen and oxygen that naturally occur in water, but rise to unsafe levels when runoff adds animal wastes and fertilizers to the water source. |
phosphates | compounds of phosphorous and oxygen that increase to harmful levels in water when fertilizers run-off into them |
turbidity | a measure of the concentration of particles suspended in water. (how cloudy the water appears) |
bio-indicators | living organisms, plants or animals, native to an area that indicate the health of a body of water |
macroinvertebrates | water insects and some other organisms that naturally occur in a body of water |
eutrophication | a process when bodies of water receive excess nutrients that stimulate the growth of algae and plants. It results in the depletion of DO. |
sewage | the liquid and solid wastes flushed down toilets and poured down drains |
EPA | The Environmental Protection Agency |
point source | pollution that comes from a specific site |
nonpoint source | pollution that comes from many sources rather than one specific site |
Clean Water Act | act occurring in 1972 placing the EPA in charge of cleaning up and regulating dumping in Earth's waters. |
pesticides | chemicals used on plants to kill insects |
herbicides | chemical substances used to kill unwanted plants and weeds. |
coliform | bacteria found in the intestines and the fecal waste that can contaminate water supplies |
run-off | water that flows over land and into streams or storm drains as precipitation falls to the Earth carrying many substances with it |
stewardship | the wise use of our natural resources |
economic trade-off | sacrificing the environment or resources in order to gain money or finances |
water treatment | processing of water so that it can be used in homes or businesses or returned to water source after use |