Illinois Well Data › Warren County
Warren County, Illinois: well depth, yield & drilling cost
✓ 1,847 ISGS records · verified 2026-10-12
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How deep are wells in Warren County, Illinois?
The median drilled well depth in Warren County is 185 ft, based on 1,837 wells with recorded depths in the state ISGS database. Half of all wells fall between 115 ft and 245 ft; 90% are shallower than 444 ft. Wells drilled since 2016 have a median depth of 213 ft.
How much does it cost to drill a well in Warren County?
Applying published per-foot rates to the local median depth of 185 ft: drilling and casing alone typically runs $4,625–$12,025; a complete system including pump, pressure tank, and hookup typically runs $11,100–$18,500. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Warren County?
Few static water level measurements are recorded for this county.
How much water do wells in Warren County produce?
The median tested yield is 10 gpm (middle half: 6 gpm–15 gpm), from 1,530 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Warren 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 |
|---|---|
| Allen, Joseph | 56 |
| Gingerich, Corwin | 7 |
| Gelement, Val | 5 |
| Wiesenhofer, Andrew | 1 |
| Cosby, Doug | 1 |
| Dryden, Michael | 1 |
| Gingerich, Klint | 1 |
| Layne Christensen Co. | 1 |
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Well records by ZIP code in Warren County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Monmouth (61462) — 333 wells, median 190 ft
- Cameron (61423) — 257 wells, median 180 ft
- Gerlaw (61435) — 230 wells, median 138 ft
- Roseville (61473) — 225 wells, median 205 ft
- Little York (61453) — 211 wells, median 158 ft
- Alexis (61412) — 170 wells, median 377 ft
- Berwick (61417) — 168 wells, median 180 ft
- Kirkwood (61447) — 149 wells, median 165 ft
- Smithshire (61478) — 106 wells, median 227 ft
- Avon (61415) — 89 wells, median 151 ft
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.