Brief view about water pollution.

1. water pollution
Prepared by
Sruthy Krishna

2. What is water pollution?
Water pollution is the contamination of water bodies (e.g.
lakes, rivers, oceans, aquifers and groundwater), very
often by human activities. It occurs when pollutants
(particles, chemicals or substances that make water
contaminated) are discharged directly or indirectly into
water bodies without enough treatment to get rid of
harmful compounds.

3. Sources of Water Pollution
1.Point source pollution
• Contaminants that enter a waterway through a discrete
conveyance, such as a pipe or ditch.(discharges from a sewage
treatment plant, a factory)
2.Non-point source pollution
• Diffuse contamination that does not originate from a single
discrete source. (The leaching out of nitrogen compounds
from agricultural land which has been fertilized is a typical
example.)

4. Types Of Water Pollution?
Surface water pollution
Found on the exterior of the
Earth'scrust, oceans, rivers
and lakes
Groundwater Pollution
Found in soil or under rock
structure or aquifers

5. Microbiological pollution
microorganisms that thrives on
water and fishes that can cause
illness to land animals and humans
Oxygen Depletion pollution
microorganisms that in water &
feeds on biodegradable substance

6. Causes of Water Pollution
• Marine Dumping
• Nutrients Pollution
• Industrial Waste
• Sewage, mainly from households
• Nuclear waste
• Suspended Matter
• Oil spillage
• Underground storage leaks

7. Effects of Water Pollution
• Effects on Environment
• Effects on Humans
• Effects on Animals

8. Effects on Environment
• Toxic water
• Thermal heating
• Our sources of water

9. Effects on Humans
• Diseases causedby:
Drinking contaminated water
Swimming in polluted water
Contact with chemically polluted
water

10. Effects on Animals
• 200 turtles in Australia’s surround waters die each
year
• Birds and mammals become coated with oil

11. Prevention of Water Pollution
• Never throw rubbish away anyhow.
• Use water wisely.
• Do not throw chemicals, oils, paints and medicines
down the sink drain, or the toilet
• Buy more environmentally safe cleaning liquids for use
at home and other public places.
• not to overuse pesticides and fertilizers.
• plant lots of trees