Washington Well Data field records · 2026 survey

Washington Well Data › Benton County

Benton County, Washington: well depth, water level & drilling cost

✓ 8,352 Ecology records · verified 2026-06-11

144 ftmedian well depth
83 ft–266 fttypical depth range
81 ftmedian static water level
30 gpmmedian yield (1,174 tests)

How deep are wells in Benton County, Washington?

The median drilled well depth in Benton County is 144 ft, based on 7,853 wells with recorded depths in the state Ecology database. Half of all wells fall between 83 ft and 266 ft; 90% are shallower than 460 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.

What is the static water level in Benton County?

The median static water level is 81 ft below ground surface (middle half of wells: 30 ft–179 ft), from 987 measurements.

How much water do wells in Benton County produce?

The median tested yield is 30 gpm (middle half: 20 gpm–50 gpm), from 1,174 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 1,090 50–100 ft 1,187 100–150 ft 1,814 150–200 ft 894 200–300 ft 1,170 300–400 ft 701 400–600 ft 568 600+ ft 429

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).

DrillerWells since 2016
Joshua Burns168
Todd Haney118
Lyle Amos99
Forest Hoopes84
David Cox69
Rod Cox64
Chad Gregory62
Clay Ross49

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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.