1. Water Pollution

2. Water pollution
Any change in the physical or chemical condition of water that can harm organisms, including human beings.
Alter taste and color
Decrease dissolved oxygen
Change pH

3. Pollutant Sources
There are two types of pollutant sources that enter water ways, point and non point sources.

4. 1. Point Source Single, identifiable , localized source of pollution.
Example: oil spill, factory, dump

5. 2. Nonpoint Source
Many different source and locations, usually a result of run-off.
Examples: fertilizers and pesticides from yards, oil from cars

6. Bioaccumulation
Toxic materials threaten organisms as they move up the food chain.

7. Debris: solid wastes
Degraded: broken down by chemical or physical processes
Biodegradable: biologically broken down
Decomposed by microorganisms (I.e. bacteria and fungi): enrich food supply
Nonbiodegradable: persistent pollutants
Example: glass, slowly eroded by water or air.

8. Land Use

9. What is a watershed?
An area of land that drains into a particular creek, river, lake, or aquifer.

10. What watershed do you live in?
Slaughter Creek
Edwards Aquifer

11. Pervious or Impervious Permeable or Impermeable
Impervious: land or surface that does not allow water to filter through
Pervious: Land or surface that allows water to filter through the ground.

18. Practice Non- Point Source Pollution or Point Source Pollution