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Kinds and Sources of Water Pollution
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Kinds and Sources of Water Pollution
Water Pollution Type
Sources of Pollution
Polluting Agent
Effects on Humans and the Environment
Can cause waterborne diseases
Infectious agents
Municipal
Human and animal wastes
Deplete oxygen needed by aquatic species
Agricultural
Sewage, animal feedlots
Oxygen-demanding waste
Add toxins to aquatic systems
Organic chemicals
Industrial
Oil, gasoline, plastics
Add toxins to aquatic systems
Industrial
Inorganic chemicals
Acids, salts, metal compounds
Cause excessive growth of algae
Agricultural
Plant nutrients
Nitrates and phosphates
Disrupt photosynthesis, food webs, etc.
Agricultural
Sediments
Soil, silt
Top 9 Most Polluted Countries
1. China
2. United States
3. India
4. Japan
5. Germany
6. Indonesia
7. Brazil
8. United Kingdom
9. Italy
Kinds of Pollution Sources
Make species vulnerable to diseases
Heat
Discharge heated water
Thermal
Point Sources
These are pollutants that come from an identifiable source such as those discharged by factories.
Nonpoint Sources
These have many sources that are difficult to trace like runoff from fertilizers and pesticides.
Transboundary
These are pollutants that come from a flowing source and reach other places.
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