1. Water Pollution & Treatment
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2. Warm-Up: copy each sentence with the correct response.
The 3 classes of indicators are ____, biological, and chemical.
Nitrates from fertilizers found in a water supply are _________.
The dirtiness or cloudiness of water is ______.
pH is a method of measuring the _____ of water.
An living organism that is used to evaluate water health is a _______.
______ can form in turbid water or in the presence of nitrates.
A _____ is an area of land that shares the same water.
Bio- indicator
Physical
Watershed
Algal Blooms
Chemical indicators
Acidity
Turbidity

3. What is Pollution?
A pollutant is any substance or form of energy that can cause harm to the environment and make it unfit for organisms.
Two types of water pollution:
Point Source
Non-Point Source

4. Water Pollution Sources
Point Source- you know the one source of pollution; it is identified; easier to detect and control
Non-point Source- comes from many sources that can not be easily identified; harder to control

5. Point-Source examples:
Pipe from Sewage Plant
Pipe from Industrial Factory

6. Point-Source examples:

7. Point-Source examples:
Oil Tanker Spill

8. Non-Point Source examples:
RUNOFF!!!
Water comes from across a large, more diffuse area of land
From…farms, lawns, parking lots, streets, construction sites, acid rain from air pollution, etc.

9. Non-Point Source examples:

10. Non-Point Source examples:

11. Non-Point Source examples:

12. Non-Point Source examples:

13. Biomagnification/Bioaccumulation
Pollution gets into smaller organisms
Amount builds up as it gets passed up food chain
Chemicals could end up in food eaten by humans

14. North Carolina Pollution
Sedimentation – increases turbidity
Erosion
Development
Agriculture – tilling soil, irrigation, livestock
Nutrient Pollution – increases Nitrate & Phosphate levels in water
 Algae Low Oxygen
Fertilizers run off in storm water
Fecal Coliform Bacteria from animal feces

15. Water Treatment Sewage Treatment Plants Septic Systems
Process raw waste & get water ready to enter back into rivers
1.) Sludge separated, chlorine used to kill harmful bacteria
2.) Oxygen & sludge-eating bacteria used
Septic Systems
Small wastewater system used by home or business in rural area
Sludge consumed by bacteria
Cleaner water exits & spreads into ground

16. Septic System

17. Water Treatment Drinking Water Treatment Plants:
1. Water piped in from river or lake
2. Flows through mixers, clumping agents & chemical disinfectants added
3. Clarifying pool separates large particles
4. Filters separate tiny particles of dust & dirt
5. Chlorine used to kill bacteria
6. Clean water goes to water storage tank

19. EPA
The Environmental Protection Agency sets and enforces water quality standards for wastewater, pollution & drinking water.
Focuses on protection of surface freshwater resources

20. What can we do to help?! Pick up pet waste Pick up litter
Plant vegetation
Dispose of chemicals & wastewater appropriately
Reduce amount of water used