Illinois Well Data › Winnebago County
Winnebago County, Illinois: well depth, yield & drilling cost
✓ 11,760 ISGS records · verified 2026-08-20
How deep are wells in Winnebago County, Illinois?
The median drilled well depth in Winnebago County is 135 ft, based on 11,544 wells with recorded depths in the state ISGS database. Half of all wells fall between 76 ft and 185 ft; 90% are shallower than 250 ft. Wells drilled since 2016 have a median depth of 200 ft.
How much does it cost to drill a well in Winnebago County?
Applying published per-foot rates to the local median depth of 200 ft: drilling and casing alone typically runs $5,000–$13,000; a complete system including pump, pressure tank, and hookup typically runs $12,000–$20,000. Actual quotes depend on site access, geology, and casing requirements.
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What is the static water level in Winnebago County?
Few static water level measurements are recorded for this county.
How much water do wells in Winnebago County produce?
The median tested yield is 10 gpm (middle half: 10 gpm–15 gpm), from 8,606 pump tests. A typical household needs 5–10 gpm.
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Drilled depth distribution
Who drills wells in Winnebago 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 |
|---|---|
| Martin, Charles | 50 |
| Smith, Allen E. | 40 |
| Bull Well Drilling Inc | 20 |
| Deppe, Edward M. | 16 |
| Beaman, Jessie J. | 12 |
| Schuur, Bill | 11 |
| Skinner, Todd | 10 |
| Nice, Mark E. | 5 |
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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.