• An underground layer of rock that is saturated with groundwater is called an aquifer.
  • Aquifers are generally found in porous rock, such as sandstone.
  • Water infiltrates the aquifer from the surface.
  • An aquifer close to the surface is also more likely to become polluted.
  • Pollutants can seep down through porous rock in recharge water.
  • People use fresh water from aquifers from springs or wells.
  • People have depended on water from wells for thousands of years.
  • A well is a hole that is dug or drilled through the ground down to an Aquifer.
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