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Pollution is the introduction of contaminants into the natural environment that cause adverse change, in the form of killing of life ,toxicity of environment , damage to ecosystem and aesthetics of our surrounding.

Definition (contd)

An unwanted change in the environment which involves the physical, biological and chemical changes involving air, water and land which affects the human life in one way or the other.

Pollution has become a serious issue after World War II in developing countries due to unchecked rapid industrialization. Pollution is the root cause of many diseases that kill and disable living organisms.

Contamination by Industries

Pollution is everywhere.....

The most common types of pollution

Air Pollution.

Water Pollution.

Noise Pollution.

Air Pollution…

Air Pollution

Air pollution is contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere.

Sources Of Air Pollution

Household combustion devices.

Motor vehicles.

Industrial facilities.

Forest fires

Pollutants causing Air Pollution……

Include particulate matter.

Carbon monoxide.


Nitrogen dioxide .

Sulfur dioxide

Sources & Pollutants

How to control air pollution?

How to control air pollution?

• Maintaining a healthy distance between the industrial and residential areas.

• The chimneys should be constructed tall in size so that the emissions must be released higher up in the environment

• The sulphur must be removed after burning.

• The gasoline must have anti knocking agents..

• The mining area should be planted with trees.

Water Pollution….

Water Pollution…

Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater).

Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds.

Water Pollution…

Water pollution affects plants and organisms living in these bodies of water. In almost all cases the effect is damaging not only to individual species and populations, but also to the natural biological communities

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