⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Grant County › ZIP 99115

ZIP 99115, Grant County: well depth, water level & drilling cost

✓ 91 Ecology records · Grant County

155 ftmedian well depth
110 ft–288 fttypical depth range
160 ftmedian static water level
29 gpmmedian yield (38 tests)

How deep are wells in ZIP 99115, Washington?

The median drilled well depth in ZIP 99115 is 155 ft, based on 91 wells with recorded depths in the state Ecology database. Half fall between 110 ft and 288 ft; 90% are shallower than 510 ft.

How much does it cost to drill a well in ZIP 99115?

Applying published per-foot rates to the local median depth of 240 ft: drilling and casing alone typically runs $6,000–$15,600; a complete system including pump, pressure tank, and hookup typically runs $14,400–$24,000. Actual quotes depend on site access, geology, and casing requirements.

Get quotes from drillers who work in ZIP 99115

Free for property owners. We route your request only to licensed drillers who actually file well logs in Grant County — never sold elsewhere.

What is the static water level in ZIP 99115?

The median static water level is 160 ft below ground surface (middle half of wells: 50 ft–315 ft), from 34 measurements.

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Drilled depth distribution

0–50 ft 0 50–100 ft 16 100–150 ft 28 150–200 ft 11 200–300 ft 15 300–400 ft 5 400–600 ft 12 600+ ft 4
Looking at a specific property in ZIP 99115?

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Part of Grant 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.