Illinois Well Data › Mason County
Mason County, Illinois: well depth, yield & drilling cost
✓ 3,074 ISGS records · verified 2026-08-20
How deep are wells in Mason County, Illinois?
The median drilled well depth in Mason County is 98 ft, based on 3,013 wells with recorded depths in the state ISGS database. Half of all wells fall between 75 ft and 114 ft; 90% are shallower than 140 ft. Wells drilled since 2016 have a median depth of 95 ft.
How much does it cost to drill a well in Mason County?
Applying published per-foot rates to the local median depth of 95 ft: drilling and casing alone typically runs $2,375–$6,175; a complete system including pump, pressure tank, and hookup typically runs $5,700–$9,500. Actual quotes depend on site access, geology, and casing requirements.
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What is the static water level in Mason County?
Few static water level measurements are recorded for this county.
How much water do wells in Mason County produce?
The median tested yield is 650 gpm (middle half: 20 gpm–1,200 gpm), from 708 pump tests. A typical household needs 5–10 gpm.
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Drilled depth distribution
Who drills wells in Mason County?
Companies and licensed drillers by number of wells logged in this county, per records filed with the Illinois State Geological Survey.
| Driller | Wells since 2016 |
|---|---|
| Tracy A McConnel | 61 |
| Henry, John | 47 |
| Greg Tarter | 39 |
| Greenfield, Edward K. | 38 |
| Cole, Steve | 25 |
| Danner, James | 18 |
| Warner, Scott | 12 |
| Wagenbach, Mark | 11 |
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Free lookup Property report — $29Method: medians computed from ISGS records (ISGS water wells; engineering, mineral and stratigraphic test borings, mine shafts, outcrops and monitoring wells are excluded, as are wells the survey records as plugged; depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.