⟁ Washington Well Data field records · 2026 survey

Washington Well Data › Island County › Coupeville (98239)

Coupeville, WA (98239): well depth, water level & drilling cost

✓ 116 Ecology records · Island County

197 ftmedian well depth
128 ft–256 fttypical depth range
153 ftmedian static water level
12 gpmmedian yield (55 tests)

How deep are wells in Coupeville (98239), Washington?

The median drilled well depth in Coupeville (98239) is 197 ft, based on 116 wells with recorded depths in the state Ecology database. Half fall between 128 ft and 256 ft; 90% are shallower than 299 ft.

How much does it cost to drill a well in Coupeville (98239)?

Applying published per-foot rates to the local median depth of 196 ft: drilling and casing alone typically runs $4,900–$12,740; a complete system including pump, pressure tank, and hookup typically runs $11,760–$19,600. Actual quotes depend on site access, geology, and casing requirements.

Get quotes from drillers who work in Coupeville (98239)

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

What is the static water level in Coupeville (98239)?

The median static water level is 153 ft below ground surface (middle half of wells: 92 ft–197 ft), from 60 measurements.

Pull every recorded well near a Coupeville (98239) address — $19

Bad well water in Island 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 1 50–100 ft 16 100–150 ft 19 150–200 ft 25 200–300 ft 43 300–400 ft 12 400–600 ft 0 600+ ft 0
Looking at a specific property in Coupeville (98239)?

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 Island 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.