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Since 1966, we have proudly served homeowners throughout Bellingham and Whatcom County with dependable, professional plumbing services. At Sullivan Plumbing, we believe every customer deserves to be treated as number one, which is why much of our growth has come through referrals and repeat business. Our licensed plumbers are trained in the latest technologies, and our fully stocked mobile warehouses carry modern tools and equipment for plumbing diagnosis, installation, and repair. We handle residential plumbing needs of every size, including water heater service, bathroom plumbing, drain repair, hydrojetting, water filter installation, and French drain solutions. We also provide 24/7 emergency plumbing service, with a live person answering calls day and night, on weekends, and during holidays.

We are committed to prompt, clean, and professional service from the moment we arrive until the job is complete. Our technicians work efficiently, restore your plumbing, and clean the work area afterward. Our services also include a 12-month warranty on technician-performed work, with the same part repaired at no charge if it fails during that period. Our annual Protection Plan provides additional value through waived service-call charges, repair discounts, extended warranty coverage, priority service, an annual water heater flush, and a whole-house plumbing inspection. We are always here to serve Bellingham and surrounding communities.

Served areas
  • Bellingham, WA, Blaine, WA, Everson, WA, Ferndale, WA, Lummi Island, WA, Lynden, WA, Maple Falls, WA, Sumas, WA
Business details
  • Year established: 1966
  • Employees: 10
  • Licensed
  • Insured
Highlights and features
  • Serving Whatcom County with trusted plumbing since 1966
  • 24/7 emergency plumbing with live phone support
  • Licensed plumbers using advanced tools and current technologies
  • Prompt, clean, professional service for every plumbing job
  • 12-month warranty on Sullivan Plumbing technician workmanship
  • Protection Plan offers savings, priority service, and maintenance
Payment methods
  • Cash, Checks, Debit cards, Credit cards, Financing available
Services
Water Heater Services When replacement becomes necessary, our technicians can assist with both traditional tank and tankless water heaters. We provide code-compliant installation and explain the information relevant to your decision. Tank models offer stored hot water and potentially quicker comparable replacement, while tankless systems take up less room, provide endless hot water, and can achieve 2030% greater efficiency.
Sewage Pump Service Our sewage pump maintenance service is designed to help preserve pump performance and reduce costly repairs or replacements. During maintenance, we test amperage, evaluate the float tree, inspect basin sealing, and verify the high-level alarm system. We also physically check cutter blades for damage or foreign debris and remove accumulated soap or grease.
Emergency Plumbing Service Whenever an urgent plumbing issue develops, our emergency response team is ready to help 24 hours a day. We ensure that customers reach a live person rather than voicemail, allowing fast dispatch when assistance is needed. Our stocked service trucks support repairs involving drains, toilets, water heaters, pipes, gas leaks, faucets, and sinks.
Sewer Line Services We provide professional sewer line repair and replacement solutions designed to address blockages, leaks, breaks, and other plumbing concerns. Our team uses advanced technology to diagnose sewer line problems accurately and complete effective repairs with minimal disruption. When trenchless methods are suitable, we can help preserve landscaping and other property features.
Main Water Lines Our main water line installation and repair services address the needs of homeowners experiencing water line problems or planning a new system. We investigate signs such as sudden pressure loss, unexplained increases in water bills, rusty water, soggy yard areas, unusual pipe noises, and foundation issues. After assessing the condition, we recommend effective repair or replacement options.
House Repiping Service We provide professional whole house repiping to improve the reliability of residential water delivery systems affected by aging pipes. Our approach combines careful evaluation with appropriate material selection and precise installation. PEX offers flexibility and resistance to freezing, while copper provides durability and longevity. Following installation, we inspect the system, test for leaks, and clean the work area.
Water Leak Detection We are equipped to handle difficult leak detection and repair needs with specialized technology and experienced plumbing expertise. Our methods can reveal moisture and escaping water in concealed areas, while video inspections provide visibility inside drain and sewer lines. After locating the problem, we explain the solution, perform the repair, test the system, and restore order.
Gas Line Service We provide professional gas line installation and repair services designed to support safe, efficient home systems. Our experienced technicians install lines for new gas appliances, perform pressure testing, and identify leaks with advanced detection technology. We also complete necessary repairs, manage permits, follow local codes, and thoroughly test each completed gas line.
Reviews (30)
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Sara Duffy
Jul 31, 2026
Nick was amazing! he did an excellent job and went above and beyond expectations. I'd recommend him to anyone who needs a plumber.
Lesley Miller
Jul 26, 2026
The team did a great job replacing a toilet for me. Thorough, kind and left the area sparkling clean when finished. Highly recommend!!
Tim Slater
Jul 01, 2026
we had a great experience. Chris at Sullivan diagnosed the problem with my mom's tankless water heater but just to confirm he faced timed with the factory rep while on site and they confirmed his diagnosis. Once the part arrived, Chris got the unit up and running and the total cost was less than the estimate if you can believe that. Knowledgeable, efficient and honest describes our experience with Sullivan.
Tim S.
Kathi Barbarino
Jun 30, 2026
Fast , friendly, straightforward , reasonable price also fun and accurate description of the problems addressed with the plumbing.. Lots of Thanks
Kathy Sheehan
Jun 21, 2026
Sullivan Plumbing has saved us so many times. Last week they installed a sump pump in our crawl space and routed it to the existing storm water drain pipe at our property line. They worked very hard digging a trench and a hole for the sump pump. Very professional, courteous and made sure they didnt leave without asking if we had any questions. They even coordinated with an electrical contractor who was unable to dig around the hard, impacted soil outside to place grounding rods. Such great service and attention to detail Kody noticed a leaky pipe in the crawl space and came back today to fix it. My water karma is restored with Sullivan Plumbing!
Larry MacDonald
Jun 01, 2026
Chris and John came out, identified a leak and told me how they were going to fix it, how long it would take and quoted me the price, two hours later, leak fixed, no mess left behind and the cost came in u der the original quote. HONEST company, great service and honorable employees.

Hope I never need them again but, if I do I know who I'm calling.

Great company and Service!
Kate Underwood
May 11, 2026
Nick was amazing! He showed up late on Sunday and stayed until he fixed the issue and did it all with a smile.
Ron Walsh
May 02, 2026
They showed up on time and diagnosed my issue quickly. The problem was resolved so quickly that I was only charged their show up fee.
Cheers to Nick!
Lyle Jansma
Apr 27, 2026
Kody from Sullivan Plumbing arrived promptly and after quickly diagnosing our issue got started. He had all the parts required for our repair in stock on his service van and was done in little over an hour. Kody (and Sullivan Plumbing) will be our go to call the next time we need service!
Elizabeth Nelson
Apr 19, 2026
I am a manager at a complex here in Bellingham. We met Kody Through Sullivan plumbing years ago when we had an emergency in the middle of the night and out of many phone calls to other companies Kody with Sullivan plumbing was the one that came through for us. His knowledge, efficiency, and wonderful demeanor Combined with fair pricing has made us comfortable calling Sullivan to have Kody come out to do a wide range of projects for us over the years including our regular check, ups of scoping and auguring out our main lines, along with multiple shower, replacements drainage, plumbing repairs around the property like angle stops and water heater shut off the list goes on! We are so glad to have Kody and Sullivan Plumbing on our side when it comes to our plumbing needs 5 s 100 times over
Michelle Hartz
Apr 13, 2026
We had our HW tank replaced and the technicians did an wonderful job. They were on time, courteous and left our mechanical room spotless . Highly recommend them ....thank you
Tim Shenkin
Feb 06, 2026
Fantastic service. Our technician was kind and really responsive to my questions. Got the job done quickly and professionally. Definitely recommend!
Xavier Lavoipierre
Nov 26, 2025
Can't heap enough praise on Sullivan! Very highly recommended. Great service, wonderful people. From our first call to the office, to the same day service to remedy our issue, they were terrific. Amy was very nice, and got us scheduled quickly. Kody showed up after what would have been his last call for the day, and we were only expecting a diagnosis and estimate. But even though it was getting late, Kody diagnosed the problem and solved our issue! He was very kind and cheerful. No need to go anywhere else.
Catherine Sulltrop
Nov 19, 2025
Sullivan Plumbing is the best plumbing business in Whatcom County. I have done business with them for over a decade. My home, my parents, nephew, and my business have all benefited from their expertise and professionalism.
Kenny Wallendahl
Oct 27, 2025
Nick from Sullivan plumbing helped us fix our leaking toilet. Next day service, friendly, and professional. Well worth the investment to install a flange, fix the piping, and properly install the new toilet. The bathroom was left cleaner than when he arrived and the attention to detail with the added caulking was unexpected. I will be using their service again.
Alene Johnson
Sep 22, 2025
Fantastic service from Kody Prosser at Sullivan Plumbing! Our 50 year old, main waterline was leaking and was located under our driveway. Kody brainstormed the perfect solution and in a little over a day we had a brand new line installed and the job site is clean and tidy! Very professional. Very fair pricing and we got a senior discount. If we could give 10 stars we would! A+++ for Kody and Sullivan Plumbing. The customer care and service are outstanding. Dont hesitate to call this company.
Nick W.
Sep 09, 2025
Sullivan Plumbing is my go-to plumbing company! They will get your house plumbing under control quickly, effectively and with great communication. They got me out of a bind. Ask for Nick!
D. Adams
Jul 23, 2025
I had my 30 yr old toilet replaced by Sullivan and found Scott and Pete great to work with. I definitely recommend Sullivan plumbing and will use them whenever i have any plumbing issues in the future.
D. Craig Penfold
Jul 07, 2025
Had to replace a faucet in our laundry room. We bought a new Delta pull out faucet rather than repair the existing hose and Sullivan did the install. Appointments were scheduled promptly and the plumber (Scott) was very professional. Wouldn't hesitate to call on then again.
Valery Egbers
Jun 16, 2025
The technician Chris arrived very quickly and made a very stressful situation extremely stress free. He was super nice and professional and put me at ease immediately. The repairs were done quickly and correctly!
Video Lk
May 22, 2025
We had a great experience with Sullivan Plumbing. They repaired a leaking drain from our claw foot tub for less than half what we had been quoted from another company (whose plumber had still not gotten back to us to explain the quote more than a week after their first repair failed).
Nick from Sullivan was courteous and knowledgeable and took care of the problem in just a couple hours. Highly recommended.
Erika Rogalski
May 06, 2025
Their staff are responsive, friendly, professional, knowledgeable and all their work has been the best. We've called Sullivan Plumbing several times since buying our vintage house. From finding the source of a smell, to fixing the problem, new installations, recommendations for products and solutions, correcting non- plumbers attempts at installs and repairs - we have been completely happy with their work. They respect our home and our cats, and we will definitely continue to call them with all our plumbing needs. We still have a kitchen remodel to go!
Justin Dourte
May 06, 2025
Nick was a hero tonight. My wife dropped her wedding ring down the P-trap for the hot water tank in our apartment and we had no access to the actual pipes. Once we called he was here within 45 minutes and very good at communicating what the best options were to retrieve it. It took him 5 minutes to find it with the camera and we had it out of the pipe within 20 minutes. Amazing work and worth every penny. Thank you so much Nick! Would highly recommend anyone who is in a pinch or needs assistance with plumbing to call Sullivan Plumbing!
J. Berg
Apr 30, 2025
Nick and Chris to save the day! I woke up to a dead hot water tank that was now leaking everywhere. I called at 10:00 am. They were at my house with a new tank by 11:30, and finished and gone by 3:15pm. Clean, curtious, worked super hard, and honestly left zero trace of them even being there. Great guys and I fully recommend this company to help you out in a crisis.
Paula Bk
Apr 19, 2025
I had a middle of the night water heater flood and got same day service to replace the heater. Kody taught me a lot about water heater operation and maintenance, and answered all my questions. He and his apprentice were professional, friendly and did the work efficiently.
Ashley Barcomb
Apr 02, 2025
Kody Prosser was our lifesaver! Our dishwasher we bought was never installed properly and developed a leak. Kody came over and fixed it for us. He was incredibly nice, efficient and absolutely knows what he is doing! Thank you again!
Nina Zamudio
Feb 06, 2025
We woke up to a strange noise in one part of our house. Husband found that our crawl space was Niagara Falls. We tried to shut the water off at the street, couldn't find it. Called several places but Sullivan came first and FAST. First guy came, dug A LOT MORE THAN USUAL to find our key shut off and shut it off. He left, next guy came and took care of the problem. We were doomsdaying the cost of the whole operation including a section of rotted pipe replacement, new shutoff valve and the emergency service. It wasn't even near the amount I was fearing.
Nice, energetic and capable young men, great at explaining and the whole nightmare was taken care of within 5 hours.
It was a helluva way to wake up but a great day overall.
We'd never had to use an emergency plumber and hope we don't have to call again but IF WE DO, Sullivan Plumbing is our go-to.
(When we mentioned it to a neighbor they said that Sullivan recently went through an owner change and that many of the older crew took retirement at that juncture). THANKS GUYS!!
Wesley Finger
Jan 25, 2025
Super happy with the service from Sullivan! They showed up on time, did a really solid job, and didnt try to upsell anything I didnt need. Quality work at a fair pricedefinitely great value. Would totally use their services again.
Chris Linders
Dec 29, 2024
I highly recommend Sullivan Plumbing. Our hot water heater was old and leaking and causing damage to our floors. Sullivan Plumbing arrived on time and had a new water heater installed within hours. They did a fantastic install. They are now my go to for all plumbing issues in the future.
Karen Russell
Mar 12, 2024
Plumbing issues are NEVER fun, but we feel very fortunate to have met Don Dawson in the midst of a doozy. He is a good and decent human and that goes a LONG ways in our book. And he has assembled a great team as well.

We had a complex plumbing problem arise in a home that houses a young family with 3 kids under the age of 10 - and only one bathroom. Don took us under his wing and saw us through every aspect, coming up with solutions that were rock solid (and creative!) that we feel very confident in.

He was very easy to communicate with, calm, knowledgable, and presented us with options all along the way that took many factors into consideration. He and his team were there when they said they'd be there and worked efficiently. They were mindful of noise, disruption to daily lives and schedules, cost, and came up with designs that were both cost effective and result in easier and more effective maintenance moving forward.

He made sure every step of the way that we were given opportunity to ask questions and be part of the decision making process. He also was welcoming of our desire to inspect the work in progress and made sure we were satisfied with every aspect. Who does that anymore?? It kind of blew us away. If we had questions, he took time to explain.

We had a lot of opportunity to interact with the office staff - and they were fantastic as well! We found each person to be friendly; their communication and responsiveness were first rate.

I cannot say that we look forward to any more plumbing problems, but I can say with all honesty, that we feel very confident in knowing who to call when the next time comes. Cant say enough good about Don and his team. They were lifesavers.