Washington Well Data › Lewis County › Onalaska (98570)
Onalaska, WA (98570): well depth, water level & drilling cost
✓ 529 Ecology records · Lewis County
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How deep are wells in Onalaska (98570), Washington?
The median drilled well depth in Onalaska (98570) is 119 ft, based on 529 wells with recorded depths in the state Ecology database. Half fall between 78 ft and 173 ft; 90% are shallower than 247 ft.
How much does it cost to drill a well in Onalaska (98570)?
Applying published per-foot rates to the local median depth of 115 ft: drilling and casing alone typically runs $2,875–$7,475; a complete system including pump, pressure tank, and hookup typically runs $6,900–$11,500. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Onalaska (98570)?
The median static water level is 49 ft below ground surface (middle half of wells: 25 ft–100 ft), from 297 measurements.
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See every recorded well near any address — depths, water levels, yields, original driller's logs — in a one-time report.
Free lookup Property report — $39Free. Goes to licensed drillers working Lewis County.
Part of Lewis 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.