A well driller who does not follow the appropriate procedures could put you at risk for problems. Information Contact any of the following for more information regarding regulations, driller licensing, or well drilling and abandonment. An aquifer is a water-bearing geologic formation. In Indiana, aquifers are generally of sand and gravel, or fractured bedrock. Water moves through the spaces between sand particles and the cracks in the rock.
Aquifers exist at various depths depending on the local geology.
Each is constructed with a different technique. Drilled wells are the most common type of well. The well is drilled through the subsurface layers and completed in an aquifer of sand and gravel or fractured rock. A similar technique once used was to bore the well hole with an auger. Drilled wells for domestic use are usually 2 to 8 inches in diameter and more than 50 feet deep.