Water Quality

Front 1

Water Pollution

Back 1

contamination of water bodies

Front 2

Fecal Coliform

Back 2

most common microbiological contaminants of natural waters. Fecal coliform live in the digestive tracks of warm-blooded animals, including humans, and are excreted in the feces

Front 3

Secondary Treatment

Back 3

treatment of sewage effluent by biological methods following sedimentation

Front 4

Wastewater Treatment

Back 4

process to convert wastewater into an effluent that can be either returned to the water cycle with minimal environmental issues or reused

Front 5

Dead Zone (in a body of water)

Back 5

hypoxic (low-oxygen) areas in the world's oceans and large lakes, caused by excessive nutrient pollution from human activities

Front 6

Aquifer

Back 6

underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials

Front 7

Leachate

Back 7

water that has filtered through a solid and drained out some of the constituents

Front 8

Biological Oxygen Demand (BOD)

Back 8

amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present

Front 9

Point Source Pollution

Back 9

any single identifiable source of pollution from which pollutants are discharged, such as a pipe, ditch, ship or factory smokestack

Front 10

Tertiary Treatment

Back 10

final treatment stage to further improve the effluent quality before it is discharged to the receiving stream

Front 11

Runoff

Back 11

flow of water that occurs when excess stormwater, meltwater, or other sources flows over the earth's surface

Front 12

pH

Back 12

numeric scale used to specify the acidity or alkalinity of an aqueous solution

Front 13

Hypoxia

Back 13

oxygen deficiency in a biotic environment

Front 14

Environmental Law

Back 14

network of treaties, statutes, regulations, and common and customary laws addressing the effects of human activity on the natural environment

Front 15

Non-Point Source Pollution

Back 15

rainfall or snowmelt moving over and through the ground

Front 16

Effluent Discharge

Back 16

outflowing of water or gas from a natural body of water, or from ahuman-made structure

Front 17

Watershed

Back 17

area or ridge of land that separates waters flowing to different rivers, basins, or seas

Front 18

Dissolved Oxygen

Back 18

amount of oxygen that is present in the water

Front 19

Methane Gas

Back 19

gas from sludge digester in wastewater treatment plant

Front 20

Contaminants (water)

Back 20

undesirable material that makes water unfit

Front 21

Primary Treatment

Back 21

temporarily holding the sewage in a basin where heavy solids can settle to the bottom

Front 22

Water Renovation and Conservation

Back 22

water is treated and returned to the environment

Front 23

Eutrophication

Back 23

enrichment of an ecosystem with chemical nutrients, typically compounds containing nitrogen, phosphorus, or both

Front 24

Chlorination

Back 24

process of adding chlorine to water; is used to kill certain bacteria and other microbes

Front 25

Activated Sludge

Back 25

microorganisms cultivated in the treatment process to break down organic matter into carbon dioxide, water, and other inorganic compounds