⟁ Oregon Well Data field records · 2026 survey

Oregon Well Data › Washington County

Washington County, Oregon: well depth, water level & drilling cost

✓ 18,556 OWRD records · verified 2026-08-14

170 ftmedian well depth
87 ft–300 fttypical depth range
32 ftmedian static water level
15 gpmmedian yield (12,334 tests)

How deep are wells in Washington County, Oregon?

The median drilled well depth in Washington County is 170 ft, based on 14,595 wells with recorded depths in the state OWRD database. Half of all wells fall between 87 ft and 300 ft; 90% are shallower than 453 ft. Wells drilled since 2016 have a median depth of 122 ft.

How much does it cost to drill a well in Washington County?

Applying published per-foot rates to the local median depth of 122 ft: drilling and casing alone typically runs $3,050–$7,930; a complete system including pump, pressure tank, and hookup typically runs $7,320–$12,200. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Washington County?

The median static water level is 32 ft below ground surface (middle half of wells: 12 ft–85 ft), from 15,971 measurements.

How much water do wells in Washington County produce?

The median tested yield is 15 gpm (middle half: 9 gpm–30 gpm), from 12,334 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 1,875 50–100 ft 2,154 100–150 ft 2,397 150–200 ft 1,721 200–300 ft 2,720 300–400 ft 1,597 400–600 ft 1,536 600+ ft 595

Who drills wells in Washington County?

Companies by number of wells completed in this county since 2016, per filed well logs (Oregon Water Resources Department).

DrillerWells since 2016
GLACIER DRILLING & DEWATERING378
GRIFFIN CONTRACT DEWATERING LLC353
ALPINE RESOURCES LLC318
A M JANNSEN WELL DRILLING CO INC253
SKYLES DRILLING, INC249
SKYLES DRILLING INC170
STEVE KASER163
ARROW DRILLING151

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Method: medians computed from OWRD records (water wells only (log type 'Water Well' — monitoring wells and geotechnical holes excluded); depths 0–5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.