⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Mason County › Union (98592)

Union, WA (98592): well depth, water level & drilling cost

✓ 538 Ecology records · Mason County

118 ftmedian well depth
73 ft–209 fttypical depth range
45 ftmedian static water level
20 gpmmedian yield (68 tests)

Pull every recorded well near a Union (98592) address — $49

How deep are wells in and around Union (98592), Washington?

The median drilled well depth in and around Union (98592) is 118 ft, based on 538 wells with recorded depths in the state Ecology database. Half fall between 73 ft and 209 ft; 90% are shallower than 360 ft.

How much does it cost to drill a well in and around Union (98592)?

Applying published per-foot rates to the local median depth of 118 ft: drilling and casing alone typically runs $2,950–$7,670; a complete system including pump, pressure tank, and hookup typically runs $7,080–$11,800. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Union (98592)?

The median static water level is 45 ft below ground surface (middle half of wells: 15 ft–94 ft), from 130 measurements.

Bad well water in Mason County?

Iron staining, rotten-egg smell, hard water, or a failed test at closing — Salish Water Works, a new Puget Sound company, publishes its treatment systems and planned prices up front and specs the fix from your water test. No in-home sales visit. Installation opens Fall 2026; the waitlist is open now and waitlist members get first slot priority.

See planned systems & pricing → salishwaterworks.com

Drilled depth distribution

0–50 ft 73 50–100 ft 146 100–150 ft 124 150–200 ft 53 200–300 ft 61 300–400 ft 41 400–600 ft 34 600+ ft 6
Looking at a specific property in Union (98592)?

See every recorded well near any address — depths, water levels, yields, original driller's logs — in a one-time report.

Free lookup Property report — $49
Get quotes from drillers who work in Union (98592)

Free. Goes to licensed drillers working Mason County.

Part of Mason 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.