Illinois Well Data field records · 2026 survey

Illinois Well Data › Mclean County

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

✓ 3,456 ISGS records · verified 2026-08-20

146 ftmedian well depth
85 ft–220 fttypical depth range
15 gpmmedian yield (2,263 tests)

How deep are wells in Mclean County, Illinois?

The median drilled well depth in Mclean County is 146 ft, based on 3,395 wells with recorded depths in the state ISGS database. Half of all wells fall between 85 ft and 220 ft; 90% are shallower than 290 ft. Wells drilled since 2016 have a median depth of 150 ft.

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

Applying published per-foot rates to the local median depth of 150 ft: drilling and casing alone typically runs $3,750–$9,750; a complete system including pump, pressure tank, and hookup typically runs $9,000–$15,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Mclean County?

Few static water level measurements are recorded for this county.

How much water do wells in Mclean County produce?

The median tested yield is 15 gpm (middle half: 10 gpm–25 gpm), from 2,263 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 230 50–100 ft 853 100–150 ft 649 150–200 ft 588 200–300 ft 787 300–400 ft 258 400–600 ft 24 600+ ft 6

Who drills wells in Mclean 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
Layten, Mark J.126
Layten, James62
Parrott, Cody46
Wagenbach, Mark30
Beck, Harold F. Jr.13
Mark Layten8
Smith, David M.8
Kickapoo Drilling Co.8

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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.