Illinois Well Data › Union County
Union County, Illinois: well depth, yield & drilling cost
✓ 1,801 ISGS records · verified 2026-10-12
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How deep are wells in Union County, Illinois?
The median drilled well depth in Union County is 250 ft, based on 1,795 wells with recorded depths in the state ISGS database. Half of all wells fall between 145 ft and 396 ft; 90% are shallower than 557 ft. Wells drilled since 2016 have a median depth of 300 ft.
How much does it cost to drill a well in Union County?
Applying published per-foot rates to the local median depth of 250 ft: drilling and casing alone typically runs $6,250–$16,250; a complete system including pump, pressure tank, and hookup typically runs $15,000–$25,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Union County?
Few static water level measurements are recorded for this county.
How much water do wells in Union County produce?
The median tested yield is 10 gpm (middle half: 7 gpm–15 gpm), from 903 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Union 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 |
|---|---|
| Beanland, Glen | 52 |
| Beanland, Leonard Ralph | 40 |
| Gregory Horman | 6 |
| Horman, Paul | 3 |
| Durbin, Kandra M. | 3 |
| Harriss, Chuck | 1 |
| Greg A. Evans | 1 |
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Well records by ZIP code in Union County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Anna (62906) — 442 wells, median 255 ft
- Jonesboro (62952) — 303 wells, median 228 ft
- Dongola (62926) — 274 wells, median 234 ft
- Millcreek (62961) — 202 wells, median 207 ft
- Cobden (62920) — 196 wells, median 282 ft
- Alto Pass (62905) — 158 wells, median 260 ft
- Buncombe (62912) — 119 wells, median 250 ft
- Wolf Lake (62998) — 68 wells, median 98 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.