Illinois Well Data › Lasalle County
Lasalle County, Illinois: well depth, yield & drilling cost
✓ 7,286 ISGS records · verified 2026-10-12
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How deep are wells in Lasalle County, Illinois?
The median drilled well depth in Lasalle County is 165 ft, based on 7,086 wells with recorded depths in the state ISGS database. Half of all wells fall between 117 ft and 260 ft; 90% are shallower than 380 ft. Wells drilled since 2016 have a median depth of 219 ft.
How much does it cost to drill a well in Lasalle County?
Applying published per-foot rates to the local median depth of 219 ft: drilling and casing alone typically runs $5,475–$14,235; a complete system including pump, pressure tank, and hookup typically runs $13,140–$21,900. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Lasalle County?
Few static water level measurements are recorded for this county.
How much water do wells in Lasalle County produce?
The median tested yield is 12 gpm (middle half: 12 gpm–22 gpm), from 3,182 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Lasalle 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 |
|---|---|
| Strange, Michael | 209 |
| Liberg, Steve Jr. | 127 |
| Knierim, Ken/K & K Well Drlg. | 29 |
| Albrecht, Harold Dean | 22 |
| Neely, Mark S. | 12 |
| Harry T Waters | 10 |
| Dober, Darrel | 9 |
| Zhieriy, Keith | 8 |
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Well records by ZIP code in Lasalle County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Ottawa (61350) — 959 wells, median 180 ft
- Sheridan (60551) — 902 wells, median 140 ft
- Marseilles (61341) — 727 wells, median 320 ft
- Wedron (60557) — 528 wells, median 160 ft
- Seneca (61360) — 521 wells, median 253 ft
- Millington (60537) — 451 wells, median 140 ft
- Mendota (61342) — 295 wells, median 200 ft
- Utica (61373) — 290 wells, median 150 ft
- Serena (60549) — 277 wells, median 160 ft
- Earlville (60518) — 273 wells, median 140 ft
- Leland (60531) — 256 wells, median 164 ft
- Leonore (61332) — 244 wells, median 94 ft
- Troy Grove (61372) — 243 wells, median 145 ft
- Oglesby (61348) — 219 wells, median 275 ft
- Grand Ridge (61325) — 209 wells, median 181 ft
- Streator (61364) — 185 wells, median 56 ft
- Somonauk (60552) — 175 wells, median 170 ft
- Triumph (61371) — 172 wells, median 150 ft
- La Salle (61301) — 142 wells, median 150 ft
- Ransom (60470) — 120 wells, median 175 ft
- Tonica (61370) — 103 wells, median 175 ft
- Cedar Point (61316) — 75 wells, median 120 ft
- Peru (61354) — 69 wells, median 70 ft
- Lostant (61334) — 67 wells, median 75 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.