⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Benton County › Kennewick (99338)

Kennewick, WA (99338): well depth, water level & drilling cost

✓ 75 Ecology records · Benton County

433 ftmedian well depth
177 ft–720 fttypical depth range
349 ftmedian static water level
30 gpmmedian yield (55 tests)

How deep are wells in Kennewick (99338), Washington?

The median drilled well depth in Kennewick (99338) is 433 ft, based on 75 wells with recorded depths in the state Ecology database. Half fall between 177 ft and 720 ft; 90% are shallower than 1,107 ft.

How much does it cost to drill a well in Kennewick (99338)?

Applying published per-foot rates to the local median depth of 464 ft: drilling and casing alone typically runs $11,600–$30,160; a complete system including pump, pressure tank, and hookup typically runs $27,840–$46,400. Actual quotes depend on site access, geology, and casing requirements.

Get quotes from drillers who work in Kennewick (99338)

Free for property owners. We route your request only to licensed drillers who actually file well logs in Benton County — never sold elsewhere.

What is the static water level in Kennewick (99338)?

The median static water level is 349 ft below ground surface (middle half of wells: 113 ft–588 ft), from 54 measurements.

Pull every recorded well near a Kennewick (99338) address — $19

Drilled depth distribution

0–50 ft 0 50–100 ft 3 100–150 ft 12 150–200 ft 9 200–300 ft 8 300–400 ft 5 400–600 ft 13 600+ ft 25
Looking at a specific property in Kennewick (99338)?

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Part of Benton County well records.

Method: medians computed from Ecology records (water wells only — soil/environmental borings and decommissions excluded; depths 0–5,000 ft), grouped by ZIP from the recorded address. Cost estimate applies published per-foot ranges to the local median depth — full methodology & sources.