⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Whitman County › ZIP 99161

ZIP 99161, Whitman County: well depth, water level & drilling cost

✓ 60 Ecology records · Whitman County

197 ftmedian well depth
138 ft–300 fttypical depth range
90 ftmedian static water level
20 gpmmedian yield (18 tests)

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How deep are wells in ZIP 99161, Washington?

The median drilled well depth in ZIP 99161 is 197 ft, based on 60 wells with recorded depths in the state Ecology database. Half fall between 138 ft and 300 ft; 90% are shallower than 376 ft.

How much does it cost to drill a well in ZIP 99161?

Applying published per-foot rates to the local median depth of 197 ft: drilling and casing alone typically runs $4,925–$12,805; a complete system including pump, pressure tank, and hookup typically runs $11,820–$19,700. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in ZIP 99161?

The median static water level is 90 ft below ground surface (middle half of wells: 28 ft–139 ft), from 19 measurements.

Drilled depth distribution

0–50 ft 2 50–100 ft 3 100–150 ft 13 150–200 ft 12 200–300 ft 14 300–400 ft 11 400–600 ft 5 600+ ft 0
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Part of Whitman 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.