Washington Well Data › Mason County
Mason County, Washington: well depth, water level & drilling cost
✓ 5,583 Ecology records · verified 2026-07-28
How deep are wells in Mason County, Washington?
The median drilled well depth in Mason County is 129 ft, based on 5,549 wells with recorded depths in the state Ecology database. Half of all wells fall between 80 ft and 198 ft; 90% are shallower than 273 ft. Wells drilled since 2016 have a median depth of 139 ft.
How much does it cost to drill a well in Mason County?
Applying published per-foot rates to the local median depth of 139 ft: drilling and casing alone typically runs $3,475–$9,035; a complete system including pump, pressure tank, and hookup typically runs $8,340–$13,900. Actual quotes depend on site access, geology, and casing requirements.
Free for property owners. We route your request only to licensed drillers who actually file well logs in Mason County — never sold elsewhere.
What is the static water level in Mason County?
The median static water level is 72 ft below ground surface (middle half of wells: 35 ft–128 ft), from 1,335 measurements.
How much water do wells in Mason County produce?
The median tested yield is 20 gpm (middle half: 15 gpm–30 gpm), from 1,547 pump tests. A typical household needs 5–10 gpm.
Pull every recorded well near a Mason County address — $19
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See planned systems & pricing → salishwaterworks.comDrilled depth distribution
Who drills wells in Mason 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 | 361 |
| Rogeray Phythian | 239 |
| Emily Davis | 136 |
| Dwane Knapp | 96 |
| Christopher Jones | 66 |
| Robert Laymon | 57 |
| Cory Johnson | 54 |
| Clayton Pitts | 52 |
See every driller with wells on record in Mason County, ranked →
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See every recorded well near any address — depths, water levels, yields, original driller's logs — in a one-time report.
Free lookup Property report — $19Well records by ZIP code in Mason County
Median depth, water level, and yield for each ZIP code with recorded wells.
- 98584 — 1,347 wells, median 134 ft
- 98528 — 369 wells, median 142 ft
- 98546 — 173 wells, median 119 ft
- 98588 — 162 wells, median 183 ft
- 98524 — 63 wells, median 120 ft
- 98592 — 50 wells, median 140 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.