Washington Well Data field records · 2026 survey

Washington Well DataMason County › ZIP 98528

ZIP 98528, Mason County: well depth, water level & drilling cost

✓ 369 Ecology records · Mason County

142 ftmedian well depth
89 ft–231 fttypical depth range
92 ftmedian static water level
16 gpmmedian yield (148 tests)

How deep are wells in ZIP 98528, Washington?

The median drilled well depth in ZIP 98528 is 142 ft, based on 369 wells with recorded depths in the state Ecology database. Half fall between 89 ft and 231 ft; 90% are shallower than 336 ft.

How much does it cost to drill a well in ZIP 98528?

Applying published per-foot rates to the local median depth of 153 ft: drilling and casing alone typically runs $3,825–$9,945; a complete system including pump, pressure tank, and hookup typically runs $9,180–$15,300. Actual quotes depend on site access, geology, and casing requirements.

Get quotes from drillers who work in ZIP 98528

Free for property owners. We route your request only to licensed drillers who actually file well logs in Mason County — never sold elsewhere.

What is the static water level in ZIP 98528?

The median static water level is 92 ft below ground surface (middle half of wells: 47 ft–152 ft), from 119 measurements.

Pull every recorded well near a ZIP 98528 address — $19

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 21 50–100 ft 89 100–150 ft 82 150–200 ft 62 200–300 ft 69 300–400 ft 24 400–600 ft 22 600+ ft 0
Looking at a specific property in ZIP 98528?

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

Free lookup Property report — $19

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.