1. Water Pollution Environment Presenter: Hye-young Yoon
Instructor: Lyra Riabov
ESL Level 5

2. Outline Usefulness of water Today’s water pollution
Causes of water pollution
Solutions for keeping our water clean
References

3. do you want to go swimming
Water
The most important resource.
People can survive without food for several weeks, but
without water we would die in less than one week.
During summer time,
do you want to go swimming
or go to beach?

4. What on Earth do you Know about Water?
Cover 80% of Earth’s surface.
Only 1% of this water is fresh we can use.
97% - Saltwater
2% - Frozen in glaciers
Use 168 gallons of water a day.
Move in a never-ending cycle
Water you drink = Water a dinosaur had drunken
Be limited and threatened by pollution.
80 percent of Earth’s surface is covered with water.
Only one percent of this water is fresh we can use.
97 percent is saltwater
Two percent is water frozen in glaciers
Water moves in a never-ending cycle; nature recycle it over and over again.
Therefore,
water you drink now = water a dinosaur have drunken
You use an average of 168 gallons of water a day
Earth’s fresh water supply is limited and threatened by pollution

5. Dying Ocean because of Dumping and Floating waste
Today’s Dying Water
Dying Duck by Oil Spill
Child and Dying Fish
Dying Ocean because of Dumping and Floating waste

6. For Water What are causes of water pollution?
Make a choice, where do you want to live?
Unfortunately, today’s water looks more like in the right picture.
Also, water condition is becoming even worse than ever.
What are causes of water pollution?
What do we have to do for saving our water?

7. What are the Causes? Toxic Matter Agricultural Chemicals Oil Spill
Other factors
Sediment, Acids, Pathogens, Organic Matter, etc.

8. Toxic Matter Minamata Disease
A great of poisonous compounds get into water.
Minamata Disease
In the 1950s, industries around Minamata Bay in Japan discharged so much mercury into the bay that people were poisoned by mercury that had found its way into the local seafood. 

9. Agricultural Chemicals
Be applied to fields to stimulate the growth of plants.
Enter streams and lakes.
Be occurred seriously damage at a lake or stream.
Lead to a drop in the population of fish.

10. Oil Spill When oil is spilt at sea,
a number of weathering processes produce changes in the physical and chemical properties of the oil's behavior at sea.

11. Recently, the oil tanker SS Minnow attempted to dock in Gilligan's Bay
Recently, the oil tanker SS Minnow attempted to  dock  in Gilligan's Bay. The ship  accidentally  ran  aground and is leaking oil!!
However,
not all marine oil pollution is sourced from oil spills.
Of that amount around 45 per cent came from shipping and within that category, 12.5 per cent was attributable to tanker accidents

12. What are Solutions? Prevention Clean-up Conservation by yourself
How can we solve the problem?

13. Prevention Appropriate legislation Don’t released previously
Pollution prevention is an aim of lawmaking.
As simple as regulations about dumping used motor oil onto the ground or into sewage system
As complex as the regulations controlling the effluent from industries or municipal sewage treatment facilities
Don’t released previously
Toxic or disease-causing materials
So harmful that natural systems can’t handle

14. Clean-up Physical treatment
Filtration. By this time the liquid should be almost clear and have very few particles in it.
Chemical treatment
After filtration, the water requires addition chemicals.
Biological treatment
Using bacterial is critical for the purification of water.
Three types of waste water treatment:

15. 12 THINGS YOU CAN DO TO SAVE WATER
Check toilets, pipes, and faucets for leaks.
Don't use the toilet as a trash can.
Put a plastic bottle in the toilet tank so that your toilet uses less water.
Take shorter showers.
Help a grown-up install water-saving showerheads in your home.
Take baths instead of showers.
Turn off the water while brushing your teeth.
Use automatic dishwashers only when you have a full load.
Use the washing machine only when you have a full load.
Turn off the water while cleaning vegetables.
Keep drinking water in the refrigerator.
If washing dishes by hand, don't leave the water running.

16. Conclusion

17. References
If you want to get information more than my presentation, go these sites!!