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Human Activity on Groundwater and Surface Water

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Sara Searcy

on 2 May 2011

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Transcript of Human Activity on Groundwater and Surface Water

Groundwater is water that comes from the ground Where does groundwater come from? Groundwater comes from rain, snow, sleet, and hail that soaks into the ground. The water moves down into the ground because of gravity, passing between particles of soil, sand, gravel, or rock until it reaches a depth where the ground is filled, or saturated, with water. Most groundwater is clean, but groundwater can become polluted, or contaminated. It can become polluted from leaky underground tanks that store gasoline, leaky landfills, or when people apply too much fertilizer or pesticides on their fields or lawns. When pollutants leak, spill, or are carelessly dumped on the ground they can move through the soil. Because it is deep in the ground, groundwater pollution is generally difficult and expensive to clean up. One of the major sources of groundwater pollution is industries Manufacturing and other chemical industries require water for processing and cleaning purposes. These used water is recycled back to water sources without proper treatment, which in turn, results in groundwater pollution. Another source of groundwater pollution is agriculture; the fertilizers, pesticides and other chemicals used in growing plants contaminate groundwater. Surface water is water collecting on the ground or in a stream, river, lake, wetland, or ocean Worldwide there are approximately 15,000 deaths each day because of polluted water and water pollution is one of the biggest ecological problems that we are facing today.
is naturally replenished by precipitation and naturally lost through discharge to evaporation
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