⟁ Illinois Well Data field records · 2026 survey

Illinois Well Data › Lasalle County

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

✓ 7,212 ISGS records · verified 2026-08-20

165 ftmedian well depth
117 ft–260 fttypical depth range
12 gpmmedian yield (3,155 tests)

How deep are wells in Lasalle County, Illinois?

The median drilled well depth in Lasalle County is 165 ft, based on 7,013 wells with recorded depths in the state ISGS database. Half of all wells fall between 117 ft and 260 ft; 90% are shallower than 380 ft. Wells drilled since 2016 have a median depth of 219 ft.

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

Applying published per-foot rates to the local median depth of 219 ft: drilling and casing alone typically runs $5,475–$14,235; a complete system including pump, pressure tank, and hookup typically runs $13,140–$21,900. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Lasalle County?

Few static water level measurements are recorded for this county.

How much water do wells in Lasalle County produce?

The median tested yield is 12 gpm (middle half: 12 gpm–22 gpm), from 3,155 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 398 50–100 ft 761 100–150 ft 1,677 150–200 ft 1,386 200–300 ft 1,370 300–400 ft 793 400–600 ft 480 600+ ft 148

Who drills wells in Lasalle 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
Strange, Michael209
Liberg, Steve Jr.126
Knierim, Ken/K & K Well Drlg.29
Albrecht, Harold Dean22
Neely, Mark S.12
Harry T Waters10
Dober, Darrel9
Zhieriy, Keith8

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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.