Washington Well Data › Island County
Island County, Washington: well depth, water level & drilling cost
✓ 6,122 Ecology records · verified 2026-10-02
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How deep are wells in Island County, Washington?
The median drilled well depth in Island County is 177 ft, based on 6,092 wells with recorded depths in the state Ecology database. Half of all wells fall between 116 ft and 248 ft; 90% are shallower than 322 ft. Wells drilled since 2016 have a median depth of 174 ft.
How much does it cost to drill a well in Island County?
Applying published per-foot rates to the local median depth of 174 ft: drilling and casing alone typically runs $4,350–$11,310; a complete system including pump, pressure tank, and hookup typically runs $10,440–$17,400. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Island County?
The median static water level is 133 ft below ground surface (middle half of wells: 69 ft–199 ft), from 835 measurements.
How much water do wells in Island County produce?
The median tested yield is 12 gpm (middle half: 10 gpm–16 gpm), from 756 pump tests. A typical household needs 5–10 gpm.
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Who drills wells in Island 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 |
|---|---|
| Brannon Hopke | 191 |
| Ralph Riggles | 148 |
| Ryan Wilhonen | 114 |
| Gerlof Boonstra | 112 |
| Westin Halvorson | 58 |
| Eugene Hitt | 49 |
| Ryan Harris | 26 |
| E Himebaugh | 19 |
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Well records by ZIP code in Island County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Camano Island (98282) — 1,162 wells, median 218 ft
- Langley (98260) — 872 wells, median 177 ft
- Oak Harbor (98277) — 859 wells, median 158 ft
- Clinton (98236) — 767 wells, median 135 ft
- Coupeville (98239) — 749 wells, median 178 ft
- Freeland (98249) — 504 wells, median 162 ft
- Greenbank (98253) — 429 wells, median 196 ft
- Oak Harbor (98278) — 279 wells, median 158 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.