Illinois Well Data › Cook County
Cook County, Illinois: well depth, yield & drilling cost
✓ 11,688 ISGS records · verified 2026-10-12
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How deep are wells in Cook County, Illinois?
The median drilled well depth in Cook County is 200 ft, based on 11,486 wells with recorded depths in the state ISGS database. Half of all wells fall between 151 ft and 250 ft; 90% are shallower than 340 ft. Wells drilled since 2016 have a median depth of 200 ft.
How much does it cost to drill a well in Cook 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.
What is the static water level in Cook County?
Few static water level measurements are recorded for this county.
How much water do wells in Cook County produce?
The median tested yield is 18 gpm (middle half: 10 gpm–25 gpm), from 7,684 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Cook 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 |
|---|---|
| Schmalfeldt, Todd | 55 |
| Brad Snelten | 55 |
| Snelten, Greg | 30 |
| Knierim, Ken/K & K Well Drlg. | 23 |
| Huemann, Joseph J. | 23 |
| Stinnett, David | 22 |
| Will County Well & Pump | 20 |
| Schwall, John J. | 14 |
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Well records by ZIP code in Cook County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Lemont (60439) — 890 wells, median 200 ft
- Schaumburg (60195) — 848 wells, median 240 ft
- Prospect Heights (60070) — 743 wells, median 175 ft
- Palos Park (60464) — 688 wells, median 200 ft
- Hoffman Estates (60179) — 524 wells, median 240 ft
- Orland Park (60467) — 486 wells, median 220 ft
- Willow Springs (60480) — 347 wells, median 115 ft
- Palatine (60067) — 331 wells, median 224 ft
- Chicago Heights (60411) — 319 wells, median 175 ft
- Oak Forest (60452) — 260 wells, median 148 ft
- Palos Heights (60463) — 234 wells, median 181 ft
- Country Club Hills (60478) — 233 wells, median 160 ft
- Elgin (60120) — 217 wells, median 200 ft
- Wheeling (60090) — 175 wells, median 182 ft
- Flossmoor (60422) — 157 wells, median 175 ft
- Schaumburg (60193) — 157 wells, median 220 ft
- Orland Park (60462) — 146 wells, median 185 ft
- Northbrook (60062) — 142 wells, median 169 ft
- Matteson (60443) — 129 wells, median 160 ft
- Des Plaines (60016) — 126 wells, median 205 ft
- Chicago Heights (60412) — 115 wells, median 153 ft
- Lansing (60438) — 103 wells, median 160 ft
- Elk Grove Village (60009) — 92 wells, median 167 ft
- Richton Park (60471) — 91 wells, median 200 ft
- Chicago Ridge (60415) — 87 wells, median 99 ft
- Tinley Park (60477) — 86 wells, median 183 ft
- Hillside (60162) — 86 wells, median 100 ft
- Olympia Fields (60461) — 82 wells, median 180 ft
- Glenview (60025) — 80 wells, median 262 ft
- Glenwood (60425) — 76 wells, median 145 ft
- Palos Hills (60465) — 72 wells, median 155 ft
- Thornton (60476) — 71 wells, median 380 ft
- Hanover Park (60133) — 71 wells, median 200 ft
- Burbank (60459) — 68 wells, median 110 ft
- Elk Grove Village (60007) — 68 wells, median 174 ft
- Techny (60082) — 67 wells, median 260 ft
- Cicero (60804) — 65 wells, median 24 ft
- Streamwood (60107) — 64 wells, median 180 ft
- Arlington Heights (60005) — 63 wells, median 173 ft
- Schaumburg (60173) — 62 wells, median 200 ft
- Midlothian (60445) — 59 wells, median 120 ft
- Alsip (60803) — 58 wells, median 95 ft
- Glenview (60026) — 58 wells, median 170 ft
- Des Plaines (60019) — 57 wells, median 200 ft
- Chicago (60633) — 53 wells, median 26 ft
- Rolling Meadows (60008) — 52 wells, median 200 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.