Illinois Well Data › Rock Island County
Rock Island County, Illinois: well depth, yield & drilling cost
✓ 3,922 ISGS records · verified 2026-08-20
How deep are wells in Rock Island County, Illinois?
The median drilled well depth in Rock Island County is 220 ft, based on 3,844 wells with recorded depths in the state ISGS database. Half of all wells fall between 140 ft and 400 ft; 90% are shallower than 472 ft. Wells drilled since 2016 have a median depth of 270 ft.
How much does it cost to drill a well in Rock Island County?
Applying published per-foot rates to the local median depth of 270 ft: drilling and casing alone typically runs $6,750–$17,550; a complete system including pump, pressure tank, and hookup typically runs $16,200–$27,000. 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 Rock Island County — never sold elsewhere.
What is the static water level in Rock Island County?
Few static water level measurements are recorded for this county.
How much water do wells in Rock Island County produce?
The median tested yield is 25 gpm (middle half: 15 gpm–40 gpm), from 2,411 pump tests. A typical household needs 5–10 gpm.
Pull every recorded well near a Rock Island County address — $29
Drilled depth distribution
Who drills wells in Rock Island 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 |
|---|---|
| White, Matt | 71 |
| Allen, Joseph | 39 |
| Stoll, Austen | 39 |
| Gelement, Val | 39 |
| Gingerich, Corwin | 18 |
| Harvey, Lucius | 12 |
| Henry, John | 6 |
| Meyer, Seth | 4 |
See every driller with wells on record in Rock Island County, ranked →
Get quotes from local drillers
See every recorded well near any address — depths, water levels, yields, original driller's logs — in a one-time report.
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.