1. Water pollution water pollution

2. Water Pollution TWO MAIN CAUSES 1. Industrialization
2. Rapid human population growth
water pollution
do fish drink water?

3. Types of Pollution
Thermal Pollution: The unnatural heating of a body of water
Reduces the dissolved oxygen and CO₂ in the water
Marine life suffocates

4. Salton Sea

5. Types of Pollution
Groundwater Pollution: Chemicals seeping into the groundwater supply
Pesticides
Herbicides
Fertilizers
Gasoline
Oil

6. Groundwater Pollution
Examples:
Farms: herbicides, fertilizers, feces
Roads: Oil, gasoline and other chemicals
Illegal dumping in rivers and streams

7. Love Canal, Niagara 1900’s 1950’s 1970’s 1980’s
Factories dumped waste into the lakes and rivers
1950’s
Asthma, miscarriages, mental retardation
1970’s
56% of the children in the area were born with birth defects
1980’s
Protests lead to new regulations on dumping

8. Types of Pollution
Ocean pollution: Pollutants being dumped into the ocean
Oil spills, Cruise ship garbage, radiation tests
ocean garbage
cleaning up the oceans

9. Ocean Pollution Examples: Exon Valdez oil spill 1989
Deep Water Horizon oil spill 2010
Bikini Island 1946 to 1958 (bomb tests)

10. Effects of Pollution
Biomagnification: The accumulation of pollutants in a food chain
Pollutant levels increase as you go up the food chain
biomagnification

11. Effects of Pollution
2. Artificial Eutrophication: An imbalance of nutrients in a lake or ocean
Causes overgrowth of algae (algae bloom)
eutrophication

12. Effects of Pollution 3. Diseases: Caused by water borne bacteria
Or microorganism
Cholera
Typhoid
Giardia

13. Effects of Pollution
4. Clean Up Costs: Takes a lot of money, time and resources oil spill clean up

14. Acid Rain
5. Acidic Rain: Acidic material from the air being deposited when it rains
Erodes buildings, and harms forests

15. BBC how water made us