⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Jefferson County

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

✓ 4,777 Ecology records · verified 2026-06-11

134 ftmedian well depth
73 ft–225 fttypical depth range
48 ftmedian static water level
12 gpmmedian yield (1,060 tests)

How deep are wells in Jefferson County, Washington?

The median drilled well depth in Jefferson County is 134 ft, based on 4,442 wells with recorded depths in the state Ecology database. Half of all wells fall between 73 ft and 225 ft; 90% are shallower than 316 ft. Wells drilled since 2016 have a median depth of 170 ft.

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

Applying published per-foot rates to the local median depth of 170 ft: drilling and casing alone typically runs $4,250–$11,050; a complete system including pump, pressure tank, and hookup typically runs $10,200–$17,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Jefferson County?

The median static water level is 48 ft below ground surface (middle half of wells: 20 ft–106 ft), from 1,110 measurements.

How much water do wells in Jefferson County produce?

The median tested yield is 12 gpm (middle half: 6 gpm–20 gpm), from 1,060 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 553 50–100 ft 1,060 100–150 ft 833 150–200 ft 613 200–300 ft 856 300–400 ft 335 400–600 ft 177 600+ ft 15

Who drills wells in Jefferson County?

Licensed drillers by number of wells completed in this county since 2016, per filed well reports (license roster: Washington Department of Ecology).

DrillerWells since 2016
Raymond Bauer38
Richard Debler30
James Tillia29
Jack Wilson26
Joshua Koepp21
Donald Lofall18
Rogeray Phythian18
Eugene Williams12

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Method: medians computed from Ecology records (water wells only — soil/environmental borings and decommissions 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.