Island County
Plumber in Oak Harbor, WA
Beaver's Plumbing is based in Monroe, about 76 driving miles from Oak Harbor by way of Deception Pass, so appointments here are scheduled around drive time. Call to confirm an arrival window for your address; emergency response times vary with distance.
Oak Harbor's median home was built in 1990: 12% of homes date from before 1960, 34% from before 1980, 35% from 1980 to 1999, and 31% from 2000 or later (Census ACS 2020 to 2024).
Key facts
- Serving
- Oak Harbor, WA
- ZIP codes
- 98277, 98278
- From our shop
- About 76 driving miles from Monroe
- Water
- City of Oak Harbor (buys 99% of its water from the City of Anacortes). Soft: typically around 30 mg/L (City of Anacortes 2025 water quality report)
- Estimates
- Free, upfront flat-rate pricing
- Emergencies
- 24/7 at (425) 845-3535
Plumbing in Oak Harbor
Oak Harbor buys 99% of its water from the Anacortes treatment plant on the Skagit River. The water crosses two mains suspended under the Deception Pass Bridge, then runs across Ault Field at NAS Whidbey Island, where the city adds fluoride at its booster station. Oak Harbor keeps four reservoirs holding 7.15 million gallons plus three deep wells for emergencies, and Anacortes reports the water as soft, typically around 30 mg/L.
Oak Harbor is in Island County, not Skagit County, and is home to Naval Air Station Whidbey Island, established in 1942. Its neighborhoods grew in stages: the Shadow Glen planned development dates to the 1960s, 34% of today's homes were built before 1980, and another 35% went up between 1980 and 1999, overlapping the years when polybutylene supply pipe was installed.
Neighborhoods we serve
Old Town Downtown Shadow Glen Kimball Heights Fireside
Near Windjammer Park, Oak Harbor Marina, Deception Pass Bridge, and everywhere in between.
Local know-how
What's hard on plumbing in Oak Harbor.
Run the tap after time away
Oak Harbor's water division recommends running a cold faucet for 2 to 3 minutes after five or more days away. Before a deployment or long trip, shut off the main valve and set the water heater to vacation mode.
Drains in 1960s neighborhoods
Oak Harbor's older subdivisions, such as Shadow Glen from the 1960s, were built when cast-iron drain lines were common. After 50-plus years that pipe can corrode and crack. A camera inspection finds the weak spots before they cause a backup.
Polybutylene in 1980s and 1990s homes
About 35% of Oak Harbor homes date from 1980 to 1999, when polybutylene supply pipe was in use (roughly 1978 to 1995). Gray plastic supply lines in the crawlspace or at the water heater deserve a look; we quote PEX replacement at a flat rate.
Water running right now?
Shut off the main water valve, turn off the water heater, and call us. Our emergency line answers 24/7.
Services
Our services in Oak Harbor.
- 01Plumbing
Drain cleaning in Oak Harbor
Slow sinks, backed-up showers and main-line clogs cleared with professional cable machines and hydro-jetting, with a camera inspection when we need to see what's causing it.
- — Kitchen, bathroom, laundry and floor drains cleared
- — Main sewer line cleaning from the cleanout
- — Hydro-jetting to scour grease, scale and roots off the pipe walls
Typical price: $250–$550 for a standard drain cleaning
Learn more - 02Plumbing
Water heaters in Oak Harbor
Tank and tankless, gas and electric: same-day repairs, code-compliant replacements and upgrades, with the unit sized to your household.
- — Diagnosis and repair of thermostats, elements, gas valves, igniters and leaks
- — Tank water heater replacement, same day when possible
- — Tankless water heater installation and upgrades
Typical price: $2,200–$4,000 for a replacement, depending on the unit
Learn more - 03Plumbing
Leak repair in Oak Harbor
Leaks found with electronic detection instead of guesswork, then fixed for good: pipes, fittings, valves, fixtures, slabs and burst lines.
- — Leak detection behind walls, under floors and in slabs
- — Pipe, fitting and valve repairs (copper, PEX, galvanized, CPVC)
- — Burst and frozen pipe repair
Typical price: $500–$1,100 for most leak repairs
Learn more - 04Plumbing
Repiping in Oak Harbor
Aging galvanized or polybutylene supply lines replaced with PEX or copper, with small access openings, a pressure test and a written warranty.
- — Whole-home PEX or copper repipe
- — Galvanized steel and polybutylene replacement
- — New shutoff valves at fixtures
- 05Plumbing
Sewer lines in Oak Harbor
Main sewer lines camera-inspected, cleaned of roots and grease, and repaired or replaced when the pipe itself has failed.
- — Sewer camera inspection with the footage explained
- — Main line cleaning and root cutting
- — Hydro-jetting for grease and root buildup
- 06Heating & cooling
HVAC in Oak Harbor
Furnaces, heat pumps, air conditioners and ductless mini-splits repaired, maintained and installed, plus duct cleaning and repair.
- — Furnace repair, maintenance and replacement
- — Heat pump repair and installation
- — Air conditioner service and installation
Also available in Oak Harbor: faucet, toilet and fixture installation, 24/7 emergency plumbing, and the Dam Good Defenders Club membership.
- Upfront, written flat-rate price before any work begins
- Dam Good Guarantee: if something we fixed isn't right, we come back and make it right, no charge.
- WA contractor license BEAVEPI741J3
Good questions
Oak Harbor plumbing FAQ.
Don't see your question? Call or text (425) 845-3535. A real person answers, 24/7.
Where does Oak Harbor's water come from?
Mostly the Skagit River. Oak Harbor buys 99% of its water from the City of Anacortes treatment plant near Mount Vernon, pipes it under the Deception Pass Bridge and across Ault Field, and adds fluoride at a booster station on NAS Whidbey. The city keeps three deep wells for emergencies. The water is soft, typically around 30 mg/L.
Does the Navy's PFAS contamination affect Oak Harbor tap water?
Not the city supply. Oak Harbor buys 99% of its water from Anacortes, whose PFAS testing in 2023 and from 2013 to 2015 found none. The Navy's PFAS investigation involves private drinking water wells near Ault Field: the Navy has sampled off-base wells and supplied clean drinking water to homes near wells that tested high.
Nearby areas we serve
Sources for local facts on this page
- https://censusreporter.org/profiles/16000US5350360/
- https://oakharbor.gov/DocumentCenter/View/1733/2025-Water-Quality-Report-PDF?bidId=
- https://www.anacorteswa.gov/ArchiveCenter/ViewFile/Item/855
- https://oakharbor.gov/DocumentCenter/View/316/List-of-Park-Descriptions-PDF
- https://www.whidbeynewstimes.com/news/navy-expands-testing-of-wells-for-forever-chemical/
- https://en.wikipedia.org/wiki/Oak_Harbor,_Washington
Plumbing problem in Oak Harbor? Let's fix it right.
Free estimates, upfront flat-rate pricing, and a 24/7 emergency line at (425) 845-3535.