Washington Well Data › Thurston County › Olympia (98502)
Olympia, WA (98502): well depth, water level & drilling cost
✓ 391 Ecology records · Thurston County
How deep are wells in Olympia (98502), Washington?
The median drilled well depth in Olympia (98502) is 120 ft, based on 387 wells with recorded depths in the state Ecology database. Half fall between 100 ft and 175 ft; 90% are shallower than 306 ft.
How much does it cost to drill a well in Olympia (98502)?
Applying published per-foot rates to the local median depth of 125 ft: drilling and casing alone typically runs $3,125–$8,125; a complete system including pump, pressure tank, and hookup typically runs $7,500–$12,500. Actual quotes depend on site access, geology, and casing requirements.
Free for property owners. We route your request only to licensed drillers who actually file well logs in Thurston County — never sold elsewhere.
What is the static water level in Olympia (98502)?
The median static water level is 76 ft below ground surface (middle half of wells: 48 ft–103 ft), from 124 measurements.
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Free lookup Property report — $19Part of Thurston 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.