⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Asotin County › ZIP 99401

ZIP 99401, Asotin County: well depth, water level & drilling cost

✓ 236 Ecology records · Asotin County

165 ftmedian well depth
125 ft–240 fttypical depth range
87 ftmedian static water level
11 gpmmedian yield (38 tests)

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How deep are wells in ZIP 99401, Washington?

The median drilled well depth in ZIP 99401 is 165 ft, based on 236 wells with recorded depths in the state Ecology database. Half fall between 125 ft and 240 ft; 90% are shallower than 400 ft.

How much does it cost to drill a well in ZIP 99401?

Applying published per-foot rates to the local median depth of 165 ft: drilling and casing alone typically runs $4,125–$10,725; a complete system including pump, pressure tank, and hookup typically runs $9,900–$16,500. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in ZIP 99401?

The median static water level is 87 ft below ground surface (middle half of wells: 58 ft–105 ft), from 32 measurements.

Drilled depth distribution

0–50 ft 1 50–100 ft 22 100–150 ft 64 150–200 ft 63 200–300 ft 49 300–400 ft 8 400–600 ft 21 600+ ft 8
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Part of Asotin 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.