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1. www.studymafia.org Seminar On Water Pollution Submitted To: Submitted By: www.studymafia.org www.studymafia.org

2. Content • Introduction • What is water pollution • Categories • Groundwater pollution •  Where does water pollution come from? • How do we measure water quality • Causes of water pollution • Solutions • Conclusion • References

3. Introduction • Water pollution occurs when harmful substances are released into the water in large quantities which cause damage to people, wildlife, or habitat or indirectly into water bodies without proper treatment to remove harmful compounds.

4. What isWater Pollution? • Water pollution is any chemical, physical or biological change in the quality of water that has a harmful effect on any living thing that drinks or uses or lives (in) it. • When humans drink polluted water it often has serious effects on their health. Water pollution can also make water unsuited for the desired use.

5. Categories • Point sources: Point source water pollution refers to contaminants that enter a waterway from a single, identifiable source, such as a pipe or ditch. • Nonpoint sources: Nonpoint source pollution refers to diffuse contamination that does not originate from a single discrete source.

6. Groundwater pollution • Interactions between groundwater and surface water are complex. Consequently, groundwater pollution, sometimes referred to as groundwater contamination, is not as easily classified as surface water pollution. • By its very nature, groundwater aquifers are susceptible to contamination from sources that may not directly affect surface water bodies, and the distinction of point vs.non-point source may be irrelevant.

7. Where does water pollution come from?

8. How do we measure water quality Bacterial Counts: Fecal coli form counts from intestines of animals • None per 100 ml for drinking • >200 per 100 ml for swimming Sources: human sewage, animals, birds, raccoons, etc.

9. Causes of water pollution • Ship pollution • Oil production • Litter • Agricultural runoff

10. Ship pollution • Several decades after important international agreements to stop marine pollution were signed, oil leakage and waste disposal from ships (including cruise ships, warships, and tankers) remains a significant cause of ocean pollution.

11. Oil production • Most oil is produced offshore and transported by ships, so it's no surprise that the oil industry is a big polluter. Despite the huge media attention they gain, tanker accidents account for only about 10 percent of the total amount of oil that enters the oceans. Unfortunately, they often create a huge amount of pollution in one place, overwhelming the local ecosystem.

12. Litter • Plastic bottles and bags can last up to 500 years in the environment without biodegrading (breaking down naturally). If you've ever done a beach clean and studied the waste you collect, you will have noticed that the vast majority of it is small, random bits of plastic.

13. Agricultural runoff • Agricultural runoff: Fertilizers, weed killers, and other farm chemicals wash into rivers and groundwater, causing algal blooms and potentially contaminating drinking water.

14. Solutions • Fertilize garden and yard plants with manure or compost instead of commercial inorganic fertilizer. • Minimize your use of pesticides. • Do not apply fertilizer or pesticides near a body of water. • Grow or buy organic foods. • Do not drink bottled water unless tests show that your tap water is contaminated. Merely refill and reuse plastic bottles with tap water. • Compost your food wastes. • Do not use water fresheners in toilets. • Do not flush unwanted medicines down the toilet.

15. Types of water pollution • Nutrients Pollution • Surface water pollution • Oxygen Depleting •  Ground water pollution • Microbiological • Suspended Matter • Chemical Water Pollution • Oil Spillage

16. Conclusion • Water pollution is bad and it’s not good for people to drink the water that’s polluted and for all organisms that need water to survive. • There are millions of people that don’t have good clean access to water and that they even have to drink the bad polluted water for them it survive, Sewage can cause water pollution along with the toxic chemicals from Industrial business.

17. References • www.google.com • www.wikipedia.com • www.studymafia.org

18. Thanks