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Water Pollution. Water Pollution Occurs In Developed Countries In developing countries, water pollution is caused mainly from dumping raw sewage into.

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Presentation on theme: "Water Pollution. Water Pollution Occurs In Developed Countries In developing countries, water pollution is caused mainly from dumping raw sewage into."— Presentation transcript:

1 Water Pollution

2 Water Pollution Occurs In Developed Countries In developing countries, water pollution is caused mainly from dumping raw sewage into the water supply. In developed countries, water pollution comes mainly from 3 sources – Municipal pollution – Industrial pollution – Agricultural pollution

3 Municipal Pollution Water pollution from cities and towns comes from – Improperly treated sewage – Septic systems – Yard runoff – Storm drains

4 The San Francisco Bay The San Francisco Bay has had a problem with pollution for many years.

5 Industrial Pollution Factories and hospitals create pollutants that contaminate waterways. – Radioactive waste – Oils, toxic chemicals and heavy metals – Heated water

6 Agricultural Pollution Livestock waste – carry harmful disease Pesticides – toxic to fish Fertilizers – cause algae to grow quickly and then die and decompose. This decreases dissolved oxygen in the waterway and fish die.

7 Listen to the following to answer the questions https://www.youtube.com/watch ?v=phmN-IpR3xw What is an example of point source pollution? What is our biggest threat to clean water, at least in Indiana? What are the common pollutants carried in non-source pollution? Why does non-point source pollution have the greatest impact on water quality? How does non-point source pollution end up in our water sources? What are some of the common causes of non-point source pollution?


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