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Water Quality Set #1

definitions only

QuestionAnswer
Algal bloom An explosion of growth in a population of algae; step in eutrophication
Anoxic An environment without oxygen
Biodiversity The number of different species in an area; GOOD water has a HIGH variety and numbers of species
Bioindicators An organism that is sensitive to environmental conditions and is one of the first to respond to changes; Some are visible with the naked eye and some require a microscope
Carbon dioxide GOOD water has LOW levels; too much and animals will suffocate
Chemical indicator Chemicals that are used to assess the health of a water system. You cannot see them just by looking!
Clean Water Act 1972 Made it unlawful to discharge point
Dissolved Oxygen (DO) Amount of oxygen dissolved in water
Eutrophication An excess of nitrates and phosphates get into a body of water
Hard water Water that contains high amounts of dissolved minerals (calcium & magnesium)
Hypoxic Describes water that is low in oxygen
Macroinvertebrate A biological indicator that surveys the "bugs" (visible animals without backbones). GOOD water includes pollution intolerant species like mayfly, stonefly & caddisfly.
Microorganism/Microbes A biological indicator that surveys the microscopic "critters" in the water. GOOD water has NO giardia, e.coli or cholera.
Nitrate A chemical indicator that indicates the water is contaminated by animal waste (poop) or fertilizer (poop). GOOD water has LOW levels. These lead to the overgrowth of aquatic bacteria.
Nonpoint Source Pollution pollution that cannot be traced to one location, such as runoff from lawns, roads, farms, and factories
pH A chemical indicator that tells how much acid or base is in the water. GOOD water is close to NEUTRAL (7.0)
Phosphate A chemical indicator that indicates the water is contaminated by detergent or chemical fertilizer. GOOD water has LOW levels. These lead to the overgrowth of aquatic bacteria.
Physical indicator Indicators of water quality that describe the physical aspects of the water. You can see some of them, but you need to measure others.
Point Source Pollution pollution that can be traced to ONE location such as a drainpipe or a smokestack
Potable Water that is considered safe to drink
Runoff Water that flows over the ground surface rather than soaking into the ground, runs into bodies of water
Salinity Total amount of all salts dissolved in water
Secchi disk Instrument used to measure turbidity
Stewardship the job of taking care of or protecting our environment and the organisms that live in it
Suspended sediment A physical indicator that tells how much dirt is floating in the water. GOOD water has LOW amounts.
Temperature A physical indicator that tells how hot or cold the water is. GOOD water has a LOW level because it holds more DO and slows bacterial growth.
Turbidity A physical indicator that tells how cloudy the water is. GOOD water has LOW levels which means the water is clear and easy to see through.
Water movement The flow or movement of a substance under influence of pressure from an area of greater pressure to an area of lower pressure; the current of a substance.
Water quality Describes the suitability of water for a specific purpose. Looks at chemical, physical and biological indicators as clues to determine overall quality
Created by: jhandy8
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