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Water pollution
 

Water pollution

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    Water pollution Water pollution Presentation Transcript

    • OVERVIEW Definition of Pollution Water Pollution a. Introduction c. Effects b. Causes d. Prevention Causes of Water Pollution Pollution Sources Water Pollution Pictures Effects of Water Pollution How to Avoid Water Pollution References
    • DEFINITION OF POLLUTION When Harmful Substances Contaminate the Environment it is Called Pollution. Pollution refers to the very bad condition of environment in terms of quantity and quality .
    • Water God’s Valuable Gift
    • Definition of Water PollutionThe Contamination of water withundesirable substances which make it unfit for usage is termed water Pollution.
    • Causes of Water Pollution About 40% of Deaths worldwide are caused by Water Pollution. Water Pollution is Caused by organsic and inorganic industrial wastes and affluents discharged into rivers. Noise also causes anxiety stress reacation and fright.
    • Water Pollution  seepage into ground water from nonpoint sources  the loss of habitats such as wetlands.  we cannot always eat what we catch because fish flesh is contaminated by the remaining discharges and sources of toxic substances.  Microbial contamination of drinking water still presents problems in many communities. 7
    • Pollution Sources Point sources are direct discharges to a single point;  examples include discharges from sewage treatment plants, injection wells,and some industrial sources. 8
    • Pollution Sources across a broad area and  Non-point sources are diffused their contamination cannot be traced to a single discharge point.  Examples include runoff of excess fertilizers, herbicides, and insecticides from agricultural lands and residential areas; oil, grease, and toxic chemicals from urban runoff and energy production; and sediment from improperly managed construction sites, crop and forest lands, and eroding stream banks. 9
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    • Water Pollution Pictures
    • Effects of Water Pollution Diseases like Cholera Malaria Typhoid (spread during the rainy season ) Aquatic life gets destroyed
    • How to Avoid Water Pollution Rivers should not be used for washing clothes or bathing animals in. Harvesting of Rainwater to meet water requirements. Dams &embankments must be created. The rivers must not be contaminated. In sacred river like Ganga the dead bodies shouldn’t thrown.
    • References Science books www.google.com http://en.wikepedia.org/wiki/AirPollution Free foto.com