⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Whitman County › ZIP 99143

ZIP 99143, Whitman County: well depth, water level & drilling cost

✓ 90 Ecology records · Whitman County

200 ftmedian well depth
131 ft–314 fttypical depth range
68 ftmedian static water level
30 gpmmedian yield (32 tests)

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How deep are wells in ZIP 99143, Washington?

The median drilled well depth in ZIP 99143 is 200 ft, based on 90 wells with recorded depths in the state Ecology database. Half fall between 131 ft and 314 ft; 90% are shallower than 420 ft.

How much does it cost to drill a well in ZIP 99143?

Applying published per-foot rates to the local median depth of 200 ft: drilling and casing alone typically runs $5,000–$13,000; a complete system including pump, pressure tank, and hookup typically runs $12,000–$20,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in ZIP 99143?

The median static water level is 68 ft below ground surface (middle half of wells: 35 ft–150 ft), from 37 measurements.

Drilled depth distribution

0–50 ft 1 50–100 ft 8 100–150 ft 24 150–200 ft 11 200–300 ft 18 300–400 ft 14 400–600 ft 10 600+ ft 4
Looking at a specific property in ZIP 99143?

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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.