groundwater quality.? plz answer this
Answers
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Groundwater quality refers to the state of water that is located beneath Earth’s surface. Groundwater can gather in cracks in subsurface rocks and in between soil particles.
Since many compounds can dissolve in water and others can be suspended in water, there is a potential for contamination with toxic compounds. These include petroleum, hydrocarbons (oil), pesticides, minerals, and disease-causing (pathogenic) microorganisms.
Groundwater tends to be less prone to contamination than surface waters such as streams, rivers, and lakes because the contaminants have to pass down through the ground to reach the water. Nevertheless, contamination can occur, especially if there are cracks in overlying soil and rock through which the toxic compounds can more easily flow.
The contamination of groundwater can be serious, especially if the water is a supply of drinking water or water for crop irrigation. In 2008, an ongoing example is the contamination of groundwater in parts of Bangladesh by naturally occurring arsenic. The increased use of the groundwater has increased the amount of this poisonous mineral leaching into the water from the surrounding ground. Tens of millions of people have been poisoned.
Groundwater quality will become even more important as global climate change increases the frequency of drought in some areas of the world.
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