Water Pollution ppt

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Water Pollution ppt

  1. 1. Presented by Chander Kumar Submitted To:Prof: Rubina Safdar
  2. 2. Water is essential to life on earth.
  3. 3. Three forms of Water. Solids: When water becomes very cold and freezes it will change from a liquid to a solid. It has a definite form and shape. Liquids: When water takes the shape of its container it is in a liquid form. Gases: When water is seen in a vapor form and has no definite size or shape it is in a gas form.
  4. 4. The earths water supply  97.2% of the Earths water supply is salt water.  Only 2.8% is fresh water! World Water Supply97.200% salt water in the oceans 02.014% ice caps and glaciers 00.600% groundwater 00.009% surface water 00.005% soil moisture 00.001% atmospheric moisture
  5. 5. Earth as water planet  Earth is often referred to as `the water planet.  Earth is unique amongst planets of our solar system because of its abundant water - in oceans, in the atmosphere, in glaciers and as fresh water on land.  Without water, life could not exist.
  6. 6. Daily use of water
  7. 7. Sources of Water pollution Fertilizers Domestic sewage Some industrial wastes
  8. 8. River pollution  Asian rivers are the most polluted in the world.  Three times as many bacteria from human waste as the global average  20 times more lead than rivers in industrialized countries.
  9. 9. Plastic waste in waterEach year, plastic waste in water and coastal areas kills up to: 100,000 marine mammals, 1 million sea birds, and countless fish.
  10. 10. Oil Pollution of water Largest source of oil pollution is pipeline leaks and runoff – 61% ocean oil pollution river & urban runoff – 30% intentional discharges from tankers – 5% accidental spills from tankers
  11. 11. Thank you

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