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Name: Jean K.
Status: Other
Age: 20s
Location: N/A
Country: N/A
Date: March 2001


Question:
I am an education student studying to be a elementary education teacher. I want to know where I can find information on the following for lessons I am developing. What role does soil play in water filtration?



Replies:
Soil definitely supplies a cleansing action to groundwater. This action may be biological or mechanical, or both. Many drinking water treatment facilities attempt to mimic this mechanical effect by using what is referred to as "rapid sand filtration". Any basic text on environmental engineering can provide extensive details on this topic.

Although much groundwater is high in water quality and may be used without treatment, the soil may also impart impurities to water. Sometimes these impurities are natural (radon, excessive dissolved minerals) while often they are the result of human activity (chemicals, bacteria from animal and human waste.)

Andy Johnson



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