Chap 14: Water Pollution Flashcards Preview

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Flashcards in Chap 14: Water Pollution Deck (19):
1

Nonpoint source

Diffuse areas (farms or large regions) where pollution is emitted

2

Point source

Distinct locations (factories or specific pipelines) that pump waste into watersheds

3

Waste water

Water produced by human activities (including human sewage, grey water - bathing/washing clothes - and dishes)

4

Oxygen-demanding waste

Organic matter that enters a body of water and feeds the growth of he microbes (decomposers)

5

Biochemical oxygen demand (BOD)

Amount of oxygen a quantity of water uses overtime at a specific temperature

6

Eutrophication

Decomposition of water (because of added nitrogen and phosphorous) providing an abundance of fertility to a water body

7

Cultural eutrophication

When a body of water has an increase in fertility due to anthropogenic inputs of nutrients

8

Indicator species

Organisms that indicate whether or not disease causing pathogens are likely to be present

9

Fecal coliform bacteria

Group of generally harmless microorganisms living in human intestines and other animals (ie. E. coli)

10

Septic system

Simple system found at houses : 2 components - a septic tank and leach field

11

Septic tank

Large container that receives waste water from the house

12

Leach field

Combination of pipes and lawn

13

Manure lagoons

Human made ponds lined with rubber to prevent manure from leaking into groundwater

14

Acid deposition

Acids deposited on each ad rain, snow, or gases along with as particles that attach to surfaces of plants, soil, and water

15

Polychlorinated Biphenyls (PCBs)

A group of industrial compounds; used to manufacture plastics and insulating electrical transformers.

Not used since 1979

16

Polybrominated Diphenyl Ethers (PBDEs)

Flame retardants added to things like construction materials, furniture, electrical components, and clothing. Exposure to PBDEs can cause brain damage, especially in children

17

Thermal pollution

Nonchemical water pollution;
Occurs when human activities cause a substantial change in the temperature of wager

18

Thermal shock

A dramatic change in water temperature that can kill organisms

19

Maximum contaminant levels (MCL)

The standard set for safe drinking water established by the EPA under the Safe Drinking Water Act