1. Environmental Issues

2. Pollution
The presence of a SUBSTANCE in water, air, or soil that makes them OFFENSIVE to humans.

3. WATER
Is one of our most precious RESOURCES

4. Water
Water that is suitable for DRINKING is referred to as POTABLE water

5. Sources of Pollution Oil Products Soil Erosion Animal and Human Waste
Chemical fertilizers, pesticides, and herbicides
High temperature water discharge

6. An increase in the amount of NUTRIENTS in an environment
Eutrophication
An increase in the amount of NUTRIENTS in an environment

7. Nutrients
Nutrients in water are expressed in terms of PARTS PER MILLIONS (PPM)

8. Nitrates
Nitrates are a common source of POLLUTION

9. Sources of Nitrates
Animal Waste
Human Waste
Chemical fertilizers
Dead and decaying organisms

10. Eutrophication
One of the first INDICATIONS of eutrophication in water is the presence of ALGAE

11. Eutrophication
Also known as POND SCUM

12. Sewage Treatment Plants Septic Tanks Waste Lagoons
Waste Control
Sewage Treatment Plants
Septic Tanks
Waste Lagoons

13. Sewage Treatment Plants
Larger towns and cities
Treat waste water to remove B.O.D.
Use Oxygenation, Chlorine, & UV Light
Tremonton, Brigham City

14. Settling tank and Drain Field
Septic Tanks
Used in rural areas
Settling tank and Drain Field
Will not work if area is densely populated

15. Waste Lagoons Used in dairies, feed lots, and some towns and cities
Logan and Perry
Animal waste is stored in a settling pond where it is decomposed by anaerobic bacteria

16. Occurs in both groundwater and in surface water
Water Pollution
Occurs in both groundwater and in surface water

17. Water stored in underground lakes called aquifers
Ground water
Water stored in underground lakes called aquifers

18. Water is absorbed by the soil as it flows into the aquifers
Surface Water
Water is absorbed by the soil as it flows into the aquifers

19. Non-Point Source Pollution
Pollution that originates from many sources

20. Point source pollution
Pollution that results from a single source

21. Erosion
Our largest environmental problem
Wasting away of soil by wind or water

22. Two main problems of erosion
The loss of Topsoil
The pollution of water by the erosion of soil

23. Soil Erosion Damage Loss of topsoil Pollution of rivers and streams
Kills fish and plants

24. Soil Conservation Service
An agency organized to help prevent the loss of topsoil and to stop erosion caused by the washing away of soil.

25. Examples of soil conservation practices
Windbreaks
Terracing
Crop rotation (summer fallow)
Contour plowing
No-till and minimum till planting

26. A piece of land that stays underwater for most of the year
Wetlands
A piece of land that stays underwater for most of the year

27. Wetlands provide several roles
Habitat
Filtering of water
Water storage
Flood prevention

28. EPA Regulations
Restrict use
Incentives to preserve wetlands
Permit must be obtained before land can be disturbed