pollutants of water

1. University of Salahaddin
College of Education
Biology department
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Halala Rahman Qadir
M.Sc. Plant physiology
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3. The objectives are:
Definition of pollutants
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Types of water pollutants
Examples of water pollutants
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4. Definition of transpiration
A pollutant is a substance or energy introduced
into the environment that has undesired effects,
or adversely affects the usefulness of a resource. A
pollutant may cause long- or short-term damage
by changing the growth rate of plant or animal
species.
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5. Water pollution
Water pollution is the contamination of natural
water bodies by chemical,
physical, radioactive or pathogenic microbial
substances.
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7. Types of water pollutants
• There are two types of water pollution:point
source and nonpoint source.
 Point source pollution: comes from a specific
source, like a factory pipe. Point source pollution is
easy to identify.
Nonpoint source pollution: comes from many
different sources, such as melting snow and
rainwater running over the ground.
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8. Examples of water pollutants
Examples of water pollutants from runoff include:
Pesticides and fertilizers from our lawns and
gardens
Oil, grease, and chemicals from our cars and
trucks
Heavy metals and chemicals from construction
sites and factories
Our drinking water can be affected by chemicals and
pollution from runoff. Swimming or playing in
polluted water can also make us sick.
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9. There are many types of water pollution because water comes from
many sources. Here are a few types of water pollution:
1. Nutrients Pollution
2. Surface water pollution
3. Oxygen Depleting
4. Ground water pollution
5. Microbiological
6. Suspended Matter
7. Chemical Water Pollution
8. Oil Spillage
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Types of water pollution

10. Many different chemicals are regarded as pollutants, ranging
from simple inorganic ions to complex organic molecules.
The water pollutants are all divided up into various classes.
Every class of pollutants has its own specific ways of
entering the environment and its own specific dangers. All
classes have major pollutants in it that are known to many
people, because of the various health effects.
•
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What are the properties and dangers of water pollutants?

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