⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Spokane County › Nine Mile Falls (99026)

Nine Mile Falls, WA (99026): well depth, water level & drilling cost

✓ 355 Ecology records · Spokane County

220 ftmedian well depth
117 ft–387 fttypical depth range
99 ftmedian static water level
9 gpmmedian yield (173 tests)

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How deep are wells in Nine Mile Falls (99026), Washington?

The median drilled well depth in Nine Mile Falls (99026) is 220 ft, based on 353 wells with recorded depths in the state Ecology database. Half fall between 117 ft and 387 ft; 90% are shallower than 500 ft.

How much does it cost to drill a well in Nine Mile Falls (99026)?

Applying published per-foot rates to the local median depth of 207 ft: drilling and casing alone typically runs $5,175–$13,455; a complete system including pump, pressure tank, and hookup typically runs $12,420–$20,700. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Nine Mile Falls (99026)?

The median static water level is 99 ft below ground surface (middle half of wells: 43 ft–182 ft), from 190 measurements.

Drilled depth distribution

0–50 ft 13 50–100 ft 55 100–150 ft 56 150–200 ft 31 200–300 ft 60 300–400 ft 51 400–600 ft 68 600+ ft 19
Looking at a specific property in Nine Mile Falls (99026)?

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Part of Spokane 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.