The document defines water pollution as the contamination of water bodies by pollutants that are directly or indirectly discharged without adequate treatment. It discusses various types of water pollution including toxic substances, organic substances, and thermal pollution. The causes and effects of water pollution are also examined, with effects including the death of aquatic animals and disruption of ecosystems. Finally, the document outlines some methods for controlling water pollution such as green infrastructure, permit programs, and reducing nonpoint source pollution and sediments.

1. Halala Rahman Qadir
Msc.Plant physiology
Water pollution
Salahaddin university
College of science
Environmental science department

2. Contents
Definition of water pollution
Types of water pollution
Causes of water pollution
Effects of water pollution
Control of water pollution

3. Definition of water pollution
Water pollution: is the contamination of water bodies
(e.g. lakes, rivers, oceans, aquifers and groundwater).
Water pollution occurs when pollutants are directly or
indirectly discharged into water bodies without
adequate treatment to remove harmful compounds.

4. Types of water pollutionTypes of water pollution
Toxic Substance: The greatest contributors to toxic pollution are
herbicides, pesticides and industrial compounds.
Organic Substance: Organic pollution occurs when an excess
of organic matter, such as manure or sewage, enters the water.
Thermal Pollution: Thermal pollution can occur when water
is used as a coolant near a power or industrial plant and then is
returned to the aquatic environment at a higher temperature than
it was originally
Ecological Pollution: Ecological pollution takes place when
chemical pollution, organic pollution or thermal pollution are
caused by nature rather than by human activity.

5. Sources of water pollution

6. Effects of water pollution
Death of aquatic (water) animals:
The main problem caused by water pollution is that it kills life that
depends on these water bodies. Dead fish, crabs, birds and sea gulls,
dolphins.
Disruption of food-chains.
Diseases
Disruptions of ecosystems

7. Causes of water pollution

8. Reduce of water pollution
Conserving and Recycling
1. Conserve water.
2. Don't throw litter into sinks and toilets
3. Help clean up litter in water-filled areas
4. Contain and compost yard waste.

9. Control of water pollution
 Green Infrastructure Low Impact Development.
Impaired Waters and Total Maximum Daily
Loads.
NPDES Permit Program
Polluted Runoff (Nonpoint Source Pollution)
Sediments

10. Control of water pollution
 Green Infrastructure Low Impact Development.
Impaired Waters and Total Maximum Daily
Loads.
NPDES Permit Program
Polluted Runoff (Nonpoint Source Pollution)
Sediments