Missouri Well Data › Polk County
Polk County, Missouri: well depth, water level & drilling cost
✓ 4,599 MoDNR records · verified 2026-10-12
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How deep are wells in Polk County, Missouri?
The median drilled well depth in Polk County is 325 ft, based on 4,577 wells with recorded depths in the state MoDNR database. Half of all wells fall between 250 ft and 380 ft; 90% are shallower than 435 ft. Wells drilled since 2016 have a median depth of 365 ft.
How much does it cost to drill a well in Polk County?
Applying published per-foot rates to the local median depth of 365 ft: drilling and casing alone typically runs $9,125–$23,725; a complete system including pump, pressure tank, and hookup typically runs $21,900–$36,500. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Polk County?
The median static water level is 90 ft below ground surface (middle half of wells: 60 ft–120 ft), from 4,236 measurements.
How much water do wells in Polk County produce?
The median tested yield is 50 gpm (middle half: 40 gpm–60 gpm), from 4,349 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Polk County?
Drillers by number of wells certified in this county, per well certification records filed with the Missouri Geological Survey. Missouri licenses individual drillers rather than companies, so these are the people who signed the certification.
| Driller | Wells since 2016 |
|---|---|
| JEREMY MCCARTHY | 464 |
| RYAN CHOATE | 150 |
| TIMOTHY STOKES | 81 |
| GARY SPRADLING | 54 |
| THOMAS COFFMAN | 19 |
| TIMOTHY GRABHER | 12 |
| NATHAN AARON WILSON | 12 |
| DON HOWE | 10 |
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Well records by ZIP code in Polk County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Bolivar (65613) — 1,031 wells, median 305 ft
- Pleasant Hope (65725) — 994 wells, median 325 ft
- Brighton (65617) — 610 wells, median 350 ft
- Half Way (65663) — 549 wells, median 300 ft
- Polk (65727) — 372 wells, median 335 ft
- Dunnegan (65640) — 369 wells, median 310 ft
- Morrisville (65710) — 333 wells, median 350 ft
- Humansville (65674) — 280 wells, median 358 ft
- Flemington (65650) — 277 wells, median 305 ft
- Aldrich (65601) — 177 wells, median 350 ft
- Eudora (65645) — 176 wells, median 375 ft
Method: medians computed from MoDNR records (MoDNR certified water wells; depths 0-5,000 ft, with the file's 99999.9 and 88888 sentinel values excluded rather than clamped). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.