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Water Pollution.

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Presentation on theme: "Water Pollution."— Presentation transcript:

1 Water Pollution

2 Water Pollution Water Pollution is the addition of any substance that has a negative effect on water or the living things that depend on water.

3 Point Source Pollution
Sources of pollution are classified, in part, by how they enter a body of water. Point source pollution is a specific source of pollution that can be identified. Example: A pipe gushing colored water into a river       

4 Non-Point Source Pollution
A widely spread source of pollution that can’t be tied to a specific point of origin is called nonpoint source pollution. Example: Runoff from a farm field, a street, or a construction site

5 Major Sources Of Water Pollution

6 Three major sources of water pollution are:
1. Human Wastes 2. Industrial Wastes 3. Chemical Runoff

7 Human Waste Sewage in cities
During heavy rains or floods, sanitary sewers sometimes overflow and can pollute the surface water. If this happens, people are often told to boil water for drinking and cooking after a flood.

8 Sewage in Rural Areas Wastes from cattle, pigs, and chickens can also be a problem in rural areas. Animal wastes can run off from pastures and barnyards and pass disease-causing bacteria and other kinds of pollution into bodies of water.

9 Industrial Wastes Chemicals, smoke , and heated water are three types of pollutants produced by factories, mines, and other industries.

10 Chemical Runoff Many factory processes involve toxic chemicals and strong acids. Other toxic wastes are produced as a result of manufacturing and mining processes. Although laws control many point sources of chemical pollution, some factories still release toxic chemicals directly into nearby rivers and lakes.


12 Hazards To Humans Humans are affected by water pollution .
People can get diseases such as hepatitis by eating seafood that has been poisoned. In many poor nations, there is always outbreak of cholera and diseases as a result of poor drinking water treatment from contaminated waters.

13 If it continues then no more drinking water
will be on earth in next 40 or 50 years

14 “Every year, more people die from the consequences of unsafe water than from all forms of violence, including war”

15 Water Pollution Solutions
Solving pollution problems involves cleaning up existing problems as well as preventing new ones. Cleanup Many pollutants are removed from fresh water through natural cleanup processes. Living things in lakes, streams, and wetlands help reduce pollution by filtering out and breaking down waste materials.

16 GROUP 03 Ghulam Abbas Zain Javed Maria Zahoor Abdullah Yousaf

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