⟁ Missouri Well Data field records · 2026 survey

Missouri Well Data › Polk County

Polk County, Missouri: well depth, water level & drilling cost

✓ 4,568 MoDNR records · verified 2026-08-21

325 ftmedian well depth
250 ft–380 fttypical depth range
90 ftmedian static water level
50 gpmmedian yield (4,320 tests)

How deep are wells in Polk County, Missouri?

The median drilled well depth in Polk County is 325 ft, based on 4,548 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.

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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 4,207 measurements.

How much water do wells in Polk County produce?

The median tested yield is 50 gpm (middle half: 40 gpm–60 gpm), from 4,320 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 1 50–100 ft 0 100–150 ft 21 150–200 ft 83 200–300 ft 1,486 300–400 ft 1,985 400–600 ft 937 600+ ft 35

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.

DrillerWells since 2016
JEREMY MCCARTHY440
RYAN CHOATE148
TIMOTHY STOKES81
GARY SPRADLING54
THOMAS COFFMAN19
NATHAN AARON WILSON12
TIMOTHY GRABHER11
DON HOWE10

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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.