Washington Well Data › Snohomish County
Snohomish County, Washington: well depth, water level & drilling cost
✓ 8,924 Ecology records · verified 2026-08-26
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How deep are wells in Snohomish County, Washington?
The median drilled well depth in Snohomish County is 105 ft, based on 8,833 wells with recorded depths in the state Ecology database. Half of all wells fall between 60 ft and 180 ft; 90% are shallower than 283 ft. Wells drilled since 2016 have a median depth of 118 ft.
How much does it cost to drill a well in Snohomish County?
Applying published per-foot rates to the local median depth of 118 ft: drilling and casing alone typically runs $2,950–$7,670; a complete system including pump, pressure tank, and hookup typically runs $7,080–$11,800. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Snohomish County?
The median static water level is 48 ft below ground surface (middle half of wells: 17 ft–110 ft), from 1,620 measurements.
How much water do wells in Snohomish County produce?
The median tested yield is 15 gpm (middle half: 8 gpm–25 gpm), from 1,685 pump tests. A typical household needs 5–10 gpm.
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Who drills wells in Snohomish 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 |
|---|---|
| Paul Anderson | 437 |
| Gary Maze | 195 |
| Ralph Riggles | 151 |
| Dale Westby | 149 |
| Pierce Kiltoff | 104 |
| David Rutledge | 101 |
| Brannon Hopke | 75 |
| Westin Halvorson | 74 |
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Well records by ZIP code in Snohomish County
Median depth, water level, and yield for each ZIP code with recorded wells.
- 98223 — 1,255 wells, median 88 ft
- Stanwood (98292) — 707 wells, median 160 ft
- Snohomish (98290) — 420 wells, median 133 ft
- 98272 — 379 wells, median 140 ft
- Lake Stevens (98258) — 204 wells, median 104 ft
- Granite Falls (98252) — 200 wells, median 78 ft
- 98271 — 162 wells, median 139 ft
- Snohomish (98296) — 102 wells, median 160 ft
- Sultan (98294) — 91 wells, median 90 ft
- Gold Bar (98251) — 67 wells, median 65 ft
- 98241 — 57 wells, median 76 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.