⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Walla Walla County › ZIP 99360

ZIP 99360, Walla Walla County: well depth, water level & drilling cost

✓ 374 Ecology records · Walla Walla County

140 ftmedian well depth
82 ft–238 fttypical depth range
63 ftmedian static water level
30 gpmmedian yield (88 tests)

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How deep are wells in ZIP 99360, Washington?

The median drilled well depth in ZIP 99360 is 140 ft, based on 374 wells with recorded depths in the state Ecology database. Half fall between 82 ft and 238 ft; 90% are shallower than 331 ft.

How much does it cost to drill a well in ZIP 99360?

Applying published per-foot rates to the local median depth of 140 ft: drilling and casing alone typically runs $3,500–$9,100; a complete system including pump, pressure tank, and hookup typically runs $8,400–$14,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in ZIP 99360?

The median static water level is 63 ft below ground surface (middle half of wells: 24 ft–119 ft), from 83 measurements.

Drilled depth distribution

0–50 ft 14 50–100 ft 112 100–150 ft 64 150–200 ft 55 200–300 ft 82 300–400 ft 17 400–600 ft 9 600+ ft 21
Looking at a specific property in ZIP 99360?

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Part of Walla Walla 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.