⟁ Illinois Well Data field records · 2026 survey

Illinois Well Data › Madison County

Madison County, Illinois: well depth, yield & drilling cost

✓ 4,601 ISGS records · verified 2026-08-20

45 ftmedian well depth
35 ft–70 fttypical depth range
493 gpmmedian yield (767 tests)

How deep are wells in Madison County, Illinois?

The median drilled well depth in Madison County is 45 ft, based on 4,422 wells with recorded depths in the state ISGS database. Half of all wells fall between 35 ft and 70 ft; 90% are shallower than 108 ft. Wells drilled since 2016 have a median depth of 55 ft.

How much does it cost to drill a well in Madison County?

Applying published per-foot rates to the local median depth of 55 ft: drilling and casing alone typically runs $1,375–$3,575; a complete system including pump, pressure tank, and hookup typically runs $3,300–$5,500. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Madison County?

Few static water level measurements are recorded for this county.

How much water do wells in Madison County produce?

The median tested yield is 493 gpm (middle half: 150 gpm–516 gpm), from 767 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 2,475 50–100 ft 1,406 100–150 ft 299 150–200 ft 95 200–300 ft 92 300–400 ft 25 400–600 ft 19 600+ ft 11

Who drills wells in Madison County?

Companies and licensed drillers by number of wells logged in this county, per records filed with the Illinois State Geological Survey.

DrillerWells since 2016
Dragovich, Mark G.124
Davinroy, Mark54
Beanland, Ronald D.54
Haake, Ralph28
Kelly, Timothy23
Skouby, Charles A.20
Greg A. Evans15
Durbin, Kandra M.14

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Method: 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.