⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Whitman County › ZIP 99111

ZIP 99111, Whitman County: well depth, water level & drilling cost

✓ 129 Ecology records · Whitman County

205 ftmedian well depth
120 ft–300 fttypical depth range
120 ftmedian static water level
20 gpmmedian yield (55 tests)

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How deep are wells in ZIP 99111, Washington?

The median drilled well depth in ZIP 99111 is 205 ft, based on 129 wells with recorded depths in the state Ecology database. Half fall between 120 ft and 300 ft; 90% are shallower than 428 ft.

How much does it cost to drill a well in ZIP 99111?

Applying published per-foot rates to the local median depth of 205 ft: drilling and casing alone typically runs $5,125–$13,325; a complete system including pump, pressure tank, and hookup typically runs $12,300–$20,500. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in ZIP 99111?

The median static water level is 120 ft below ground surface (middle half of wells: 57 ft–213 ft), from 56 measurements.

Drilled depth distribution

0–50 ft 2 50–100 ft 11 100–150 ft 27 150–200 ft 19 200–300 ft 28 300–400 ft 22 400–600 ft 13 600+ ft 7
Looking at a specific property in ZIP 99111?

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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.