2. Agenda
What is water pollution?
Types of water pollution.
Main causes of water pollution.
Effects of water pollution.
How can we reduce or prevent it.
3. Water Pollution
Water Pollution occurs when energy and other
materials are released into the water,
contaminating the quality of it for other users.
4. Types
Surface water pollution
> found on the exterior of the Earth's
crust, oceans, rivers and lakes
Groundwater Pollution
>found in soil or under rock structure or
aquifers
5. Main Causes of Water Pollution
Industrial waste
Sewage
Mainly from
households
6. Main Causes of Water Pollution
Sewage figures from WHO (2013).
About 780 M need Improved
drinking water sources.
2.5 B need Improved
sanitation facilities.
1 B practice Open defecation.
1 b
16%
2.5 b
40%780 m
11%
2.1 b
33%
World's Population
7. Different Causes of Water
Pollution
Chemical waste.
Examples:
-Detergents
-Heavy metals