Washington Well Data › Spokane County
Spokane County, Washington: well depth, water level & drilling cost
✓ 14,458 Ecology records · verified 2026-08-26
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How deep are wells in Spokane County, Washington?
The median drilled well depth in Spokane County is 222 ft, based on 14,299 wells with recorded depths in the state Ecology database. Half of all wells fall between 137 ft and 360 ft; 90% are shallower than 520 ft. Wells drilled since 2016 have a median depth of 240 ft.
How much does it cost to drill a well in Spokane County?
Applying published per-foot rates to the local median depth of 240 ft: drilling and casing alone typically runs $6,000–$15,600; a complete system including pump, pressure tank, and hookup typically runs $14,400–$24,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Spokane County?
The median static water level is 67 ft below ground surface (middle half of wells: 38 ft–139 ft), from 4,047 measurements.
How much water do wells in Spokane County produce?
The median tested yield is 13 gpm (middle half: 5 gpm–25 gpm), from 4,294 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Spokane 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 |
|---|---|
| Brian Mosset | 888 |
| Todd Lively | 629 |
| Alex Vermillion | 533 |
| Chris Macpherson | 203 |
| Darin Minden | 201 |
| Morgan Joy | 181 |
| Jim Mcleslie | 155 |
| Brian Schaefer | 131 |
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Well records by ZIP code in Spokane County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Deer Park (99006) — 1,516 wells, median 200 ft
- 99004 — 1,190 wells, median 200 ft
- Spokane (99224) — 598 wells, median 196 ft
- Chattaroy (99003) — 542 wells, median 300 ft
- 99022 — 508 wells, median 180 ft
- Elk (99009) — 435 wells, median 220 ft
- Nine Mile Falls (99026) — 355 wells, median 220 ft
- Valleyford (99036) — 313 wells, median 240 ft
- Mead (99021) — 291 wells, median 260 ft
- 99208 — 254 wells, median 320 ft
- Spokane (99217) — 253 wells, median 320 ft
- Spokane (99223) — 211 wells, median 340 ft
- 99031 — 203 wells, median 280 ft
- 00000 — 202 wells, median 241 ft
- 99005 — 198 wells, median 205 ft
- 99025 — 191 wells, median 350 ft
- 99016 — 175 wells, median 400 ft
- Liberty Lake (99019) — 142 wells, median 350 ft
- Rockford (99030) — 112 wells, median 300 ft
- Mica (99023) — 83 wells, median 525 ft
- 99206 — 65 wells, median 320 ft
- 99001 — 63 wells, median 255 ft
- 99008 — 58 wells, median 139 ft
- 99204 — 56 wells, median 215 ft
- 99012 — 53 wells, median 280 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.