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Michigan Environmental Education Curriculum
Groundwater Supply

Parts of a well

Source: National Ground Water Association

This diagram shows what a finished water well looks like. The casing is a steel pipe that is placed in the drilled hole. At the bottom of the casing (in the aquifer) is a well screen, which allows water in but keeps soil out. The water is extracted from the ground via a pump, which may be submerged, as shown here, or mounted at the ground surface, as is usually the case with larger municipal wells.
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