Washington Well Data › Yakima County
Yakima County, Washington: well depth, water level & drilling cost
✓ 8,438 Ecology records · verified 2026-07-28
How deep are wells in Yakima County, Washington?
The median drilled well depth in Yakima County is 185 ft, based on 8,405 wells with recorded depths in the state Ecology database. Half of all wells fall between 120 ft and 300 ft; 90% are shallower than 465 ft. Wells drilled since 2016 have a median depth of 218 ft.
How much does it cost to drill a well in Yakima County?
Applying published per-foot rates to the local median depth of 218 ft: drilling and casing alone typically runs $5,450–$14,170; a complete system including pump, pressure tank, and hookup typically runs $13,080–$21,800. Actual quotes depend on site access, geology, and casing requirements.
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What is the static water level in Yakima County?
The median static water level is 81 ft below ground surface (middle half of wells: 29 ft–176 ft), from 1,572 measurements.
How much water do wells in Yakima County produce?
The median tested yield is 50 gpm (middle half: 30 gpm–75 gpm), from 1,987 pump tests. A typical household needs 5–10 gpm.
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Drilled depth distribution
Who drills wells in Yakima 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 |
|---|---|
| Derrick Rank | 288 |
| Thomas Mcguire | 280 |
| Gary Lydin | 251 |
| Justin Wamsley | 249 |
| Michael Robinson | 168 |
| Craig Wamsley | 55 |
| Lyle Amos | 33 |
| Kevin Lydin | 28 |
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Median depth, water level, and yield for each ZIP code with recorded wells.
- 98942 — 405 wells, median 250 ft
- Yakima (98908) — 288 wells, median 245 ft
- Yakima (98903) — 189 wells, median 196 ft
- 98944 — 174 wells, median 188 ft
- 98953 — 171 wells, median 185 ft
- Yakima (98901) — 162 wells, median 229 ft
- 98937 — 156 wells, median 105 ft
- Moxee (98936) — 154 wells, median 320 ft
- 98951 — 149 wells, median 90 ft
- Grandview (98930) — 145 wells, median 164 ft
- Mabton (98935) — 82 wells, median 148 ft
- 98948 — 80 wells, median 90 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.