Washington Well Data › Benton County
Benton County, Washington: well depth, water level & drilling cost
✓ 4,431 Ecology records · verified 2026-07-28
How deep are wells in Benton County, Washington?
The median drilled well depth in Benton County is 162 ft, based on 4,405 wells with recorded depths in the state Ecology database. Half of all wells fall between 115 ft and 300 ft; 90% are shallower than 475 ft. Wells drilled since 2016 have a median depth of 198 ft.
How much does it cost to drill a well in Benton County?
Applying published per-foot rates to the local median depth of 198 ft: drilling and casing alone typically runs $4,950–$12,870; a complete system including pump, pressure tank, and hookup typically runs $11,880–$19,800. Actual quotes depend on site access, geology, and casing requirements.
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What is the static water level in Benton County?
The median static water level is 81 ft below ground surface (middle half of wells: 31 ft–180 ft), from 996 measurements.
How much water do wells in Benton County produce?
The median tested yield is 30 gpm (middle half: 20 gpm–50 gpm), from 1,171 pump tests. A typical household needs 5–10 gpm.
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Drilled depth distribution
Who drills wells in Benton 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 Burns | 168 |
| Todd Haney | 120 |
| Lyle Amos | 99 |
| Forest Hoopes | 86 |
| David Cox | 69 |
| Rod Cox | 64 |
| Chad Gregory | 64 |
| Clay Ross | 55 |
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Median depth, water level, and yield for each ZIP code with recorded wells.
- 99350 — 447 wells, median 135 ft
- 99320 — 263 wells, median 240 ft
- 99337 — 228 wells, median 165 ft
- 99336 — 102 wells, median 160 ft
- 99353 — 99 wells, median 217 ft
- Kennewick (99338) — 75 wells, median 433 ft
- 99352 — 64 wells, median 190 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.