Washington Well Data › Grays Harbor County
Grays Harbor County, Washington: well depth, water level & drilling cost
✓ 2,227 Ecology records · verified 2026-08-26
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How deep are wells in Grays Harbor County, Washington?
The median drilled well depth in Grays Harbor County is 91 ft, based on 2,211 wells with recorded depths in the state Ecology database. Half of all wells fall between 59 ft and 152 ft; 90% are shallower than 231 ft. Wells drilled since 2016 have a median depth of 93 ft.
How much does it cost to drill a well in Grays Harbor County?
Applying published per-foot rates to the local median depth of 93 ft: drilling and casing alone typically runs $2,325–$6,045; a complete system including pump, pressure tank, and hookup typically runs $5,580–$9,300. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Grays Harbor County?
The median static water level is 26 ft below ground surface (middle half of wells: 15 ft–56 ft), from 601 measurements.
How much water do wells in Grays Harbor County produce?
The median tested yield is 20 gpm (middle half: 12 gpm–30 gpm), from 711 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Grays Harbor 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 |
|---|---|
| Joshua Koepp | 143 |
| Christopher Jones | 70 |
| Rogeray Phythian | 69 |
| Robert Laymon | 57 |
| Daniel King | 52 |
| Albert Smith | 52 |
| Daniel Carpenter | 26 |
| Cory Johnson | 26 |
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Well records by ZIP code in Grays Harbor County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Elma (98541) — 372 wells, median 93 ft
- 98563 — 155 wells, median 92 ft
- Mccleary (98557) — 110 wells, median 59 ft
- Oakville (98568) — 107 wells, median 78 ft
- Hoquiam (98550) — 92 wells, median 91 ft
- 98520 — 79 wells, median 120 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.