⟁ Illinois Well Data field records · 2026 survey

Illinois Well Data › Dupage County

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

✓ 10,728 ISGS records · verified 2026-08-20

161 ftmedian well depth
140 ft–200 fttypical depth range
12 gpmmedian yield (4,099 tests)

How deep are wells in Dupage County, Illinois?

The median drilled well depth in Dupage County is 161 ft, based on 10,476 wells with recorded depths in the state ISGS database. Half of all wells fall between 140 ft and 200 ft; 90% are shallower than 255 ft. Wells drilled since 2016 have a median depth of 168 ft.

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

Applying published per-foot rates to the local median depth of 168 ft: drilling and casing alone typically runs $4,200–$10,920; a complete system including pump, pressure tank, and hookup typically runs $10,080–$16,800. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Dupage County?

Few static water level measurements are recorded for this county.

How much water do wells in Dupage County produce?

The median tested yield is 12 gpm (middle half: 10 gpm–20 gpm), from 4,099 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 56 50–100 ft 340 100–150 ft 3,013 150–200 ft 4,258 200–300 ft 2,217 300–400 ft 409 400–600 ft 48 600+ ft 135

Who drills wells in Dupage 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
Knierim, Ken/K & K Well Drlg.49
Matt Liberg43
Fischer, James Monroe10
Jason Jablonski10
Will County Well & Pump9
Jablonski, John A.6
Stinnett, David5
Neely, Mark S.4

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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.