Washington Well Data field records · 2026 survey

Washington Well DataThurston County › Olympia (98516)

Olympia, WA (98516): well depth, water level & drilling cost

✓ 203 Ecology records · Thurston County

122 ftmedian well depth
84 ft–159 fttypical depth range
73 ftmedian static water level
20 gpmmedian yield (107 tests)

How deep are wells in Olympia (98516), Washington?

The median drilled well depth in Olympia (98516) is 122 ft, based on 201 wells with recorded depths in the state Ecology database. Half fall between 84 ft and 159 ft; 90% are shallower than 255 ft.

How much does it cost to drill a well in Olympia (98516)?

Applying published per-foot rates to the local median depth of 138 ft: drilling and casing alone typically runs $3,450–$8,970; a complete system including pump, pressure tank, and hookup typically runs $8,280–$13,800. Actual quotes depend on site access, geology, and casing requirements.

Get quotes from drillers who work in Olympia (98516)

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

What is the static water level in Olympia (98516)?

The median static water level is 73 ft below ground surface (middle half of wells: 46 ft–117 ft), from 91 measurements.

Pull every recorded well near a Olympia (98516) address — $19

Bad well water in Thurston 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 10 50–100 ft 64 100–150 ft 65 150–200 ft 25 200–300 ft 23 300–400 ft 6 400–600 ft 8 600+ ft 0
Looking at a specific property in Olympia (98516)?

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 Thurston 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.