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Water pollutants are any material added added to water that makes it unfit for its intended purposes. In many cases it means the water is unsafe for consumption. The water is unsafe for irrigation also. Water pollution is a large set of adverse effects upon water bodies such as lakes, rivers, oceans and groundwater caused by human activities. Although natural phenomena such as volcanoes, storms and earthquakes also cause major changes in water quality and the ecological status of water.  
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