⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Whitman County › ZIP 99163

ZIP 99163, Whitman County: well depth, water level & drilling cost

✓ 295 Ecology records · Whitman County

280 ftmedian well depth
197 ft–400 fttypical depth range
160 ftmedian static water level
25 gpmmedian yield (83 tests)

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How deep are wells in ZIP 99163, Washington?

The median drilled well depth in ZIP 99163 is 280 ft, based on 295 wells with recorded depths in the state Ecology database. Half fall between 197 ft and 400 ft; 90% are shallower than 493 ft.

How much does it cost to drill a well in ZIP 99163?

Applying published per-foot rates to the local median depth of 280 ft: drilling and casing alone typically runs $7,000–$18,200; a complete system including pump, pressure tank, and hookup typically runs $16,800–$28,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in ZIP 99163?

The median static water level is 160 ft below ground surface (middle half of wells: 63 ft–298 ft), from 64 measurements.

Drilled depth distribution

0–50 ft 1 50–100 ft 15 100–150 ft 26 150–200 ft 33 200–300 ft 73 300–400 ft 69 400–600 ft 71 600+ ft 7
Looking at a specific property in ZIP 99163?

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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.