Missouri Well Data › Washington County
Washington County, Missouri: well depth, water level & drilling cost
✓ 3,326 MoDNR records · verified 2026-10-12
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How deep are wells in Washington County, Missouri?
The median drilled well depth in Washington County is 220 ft, based on 3,277 wells with recorded depths in the state MoDNR database. Half of all wells fall between 165 ft and 300 ft; 90% are shallower than 402 ft. Wells drilled since 2016 have a median depth of 260 ft.
How much does it cost to drill a well in Washington County?
Applying published per-foot rates to the local median depth of 260 ft: drilling and casing alone typically runs $6,500–$16,900; a complete system including pump, pressure tank, and hookup typically runs $15,600–$26,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Washington County?
The median static water level is 60 ft below ground surface (middle half of wells: 40 ft–110 ft), from 2,446 measurements.
How much water do wells in Washington County produce?
The median tested yield is 20 gpm (middle half: 15 gpm–30 gpm), from 3,066 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Washington 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 |
|---|---|
| FELIX EYE | 168 |
| SAM TRIPP | 45 |
| GEORGE MANN | 43 |
| RICHARD DAVID HENRY | 34 |
| JASON BOYCE | 29 |
| DOMINIQUE DURBIN | 28 |
| DANIEL FLYNN | 27 |
| ALAN BURGESS | 26 |
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Well records by ZIP code in Washington County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Potosi (63664) — 620 wells, median 220 ft
- Mineral Point (63660) — 545 wells, median 200 ft
- Cadet (63630) — 457 wells, median 200 ft
- Richwoods (63071) — 305 wells, median 246 ft
- Irondale (63648) — 247 wells, median 265 ft
- Belgrade (63622) — 239 wells, median 205 ft
- Tiff (63674) — 196 wells, median 205 ft
- Caledonia (63631) — 160 wells, median 205 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.