Washington Well Data › Whitman County
Whitman County, Washington: well depth, water level & drilling cost
✓ 813 Ecology records · verified 2026-08-26
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How deep are wells in Whitman County, Washington?
The median drilled well depth in Whitman County is 220 ft, based on 812 wells with recorded depths in the state Ecology database. Half of all wells fall between 140 ft and 340 ft; 90% are shallower than 450 ft. Wells drilled since 2016 have a median depth of 225 ft.
How much does it cost to drill a well in Whitman County?
Applying published per-foot rates to the local median depth of 225 ft: drilling and casing alone typically runs $5,625–$14,625; a complete system including pump, pressure tank, and hookup typically runs $13,500–$22,500. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Whitman County?
The median static water level is 100 ft below ground surface (middle half of wells: 38 ft–200 ft), from 238 measurements.
How much water do wells in Whitman County produce?
The median tested yield is 25 gpm (middle half: 18 gpm–40 gpm), from 289 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Whitman County?
Licensed drillers by number of wells completed in this county since 2016, per filed well reports (license roster: Washington Department of Ecology).
| Driller | Wells since 2016 |
|---|---|
| Brett Uhlenkott | 96 |
| Eric Forsmann | 72 |
| Caleb Forsmann | 40 |
| James Hickam | 27 |
| Brian Mosset | 6 |
| Todd Lively | 6 |
| Aidan Gemmell | 6 |
| Jim Mcleslie | 4 |
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Well records by ZIP code in Whitman County
Median depth, water level, and yield for each ZIP code with recorded wells.
- 99163 — 208 wells, median 300 ft
- 99111 — 129 wells, median 205 ft
- Lacrosse (99143) — 53 wells, median 260 ft
Method: medians computed from Ecology records (water wells only — soil/environmental borings and decommissions excluded; depths 0–5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.