Washington Well Data › Benton County
Benton County, Washington: well depth, water level & drilling cost
✓ 7,009 Ecology records · verified 2026-10-02
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How deep are wells in Benton County, Washington?
The median drilled well depth in Benton County is 145 ft, based on 6,983 wells with recorded depths in the state Ecology database. Half of all wells fall between 94 ft and 260 ft; 90% are shallower than 430 ft. Wells drilled since 2016 have a median depth of 196 ft.
How much does it cost to drill a well in Benton County?
Applying published per-foot rates to the local median depth of 196 ft: drilling and casing alone typically runs $4,900–$12,740; a complete system including pump, pressure tank, and hookup typically runs $11,760–$19,600. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Benton County?
The median static water level is 73 ft below ground surface (middle half of wells: 30 ft–171 ft), from 1,513 measurements.
How much water do wells in Benton County produce?
The median tested yield is 30 gpm (middle half: 20 gpm–50 gpm), from 1,180 pump tests. A typical household needs 5–10 gpm.
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 | 173 |
| Todd Haney | 126 |
| Lyle Amos | 102 |
| Forest Hoopes | 86 |
| David Cox | 69 |
| Rod Cox | 65 |
| Chad Gregory | 64 |
| Clay Ross | 56 |
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Well records by ZIP code in Benton County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Kennewick (99337) — 1,349 wells, median 110 ft
- Prosser (99350) — 1,277 wells, median 125 ft
- Benton City (99320) — 1,210 wells, median 200 ft
- West Richland (99353) — 774 wells, median 190 ft
- Richland (99352) — 575 wells, median 211 ft
- Kennewick (99338) — 574 wells, median 176 ft
- Pasco (99302) — 366 wells, median 74 ft
- Kennewick (99336) — 260 wells, median 98 ft
- Wallula (99363) — 155 wells, median 195 ft
- Paterson (99345) — 97 wells, median 313 ft
- Plymouth (99346) — 87 wells, median 220 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.