Illinois Well Data › Mcdonough County
Mcdonough County, Illinois: well depth, yield & drilling cost
✓ 1,263 ISGS records · verified 2026-08-20
How deep are wells in Mcdonough County, Illinois?
The median drilled well depth in Mcdonough County is 220 ft, based on 1,246 wells with recorded depths in the state ISGS database. Half of all wells fall between 85 ft and 315 ft; 90% are shallower than 365 ft. Wells drilled since 2016 have a median depth of 240 ft.
How much does it cost to drill a well in Mcdonough County?
Applying published per-foot rates to the local median depth of 240 ft: drilling and casing alone typically runs $6,000–$15,600; a complete system including pump, pressure tank, and hookup typically runs $14,400–$24,000. Actual quotes depend on site access, geology, and casing requirements.
Free for property owners. We route your request only to licensed drillers who actually file well logs in Mcdonough County — never sold elsewhere.
What is the static water level in Mcdonough County?
Few static water level measurements are recorded for this county.
How much water do wells in Mcdonough County produce?
The median tested yield is 10 gpm (middle half: 5 gpm–20 gpm), from 861 pump tests. A typical household needs 5–10 gpm.
Pull every recorded well near a Mcdonough County address — $29
Drilled depth distribution
Who drills wells in Mcdonough 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 | 4 |
See every driller with wells on record in Mcdonough County, ranked →
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Free lookup Property report — $29Method: 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.