While the field backflow testing service itself was adequate, the company's back-office operations…read moreare poorly managed and unacceptably disorganized. Their reminder system is not aligned with municipal requirements, and their billing and accounts receivable processes are fundamentally flawed. I was repeatedly told by staff that a prior invoice had not been paid, despite the fact that I retained written confirmation showing the payment was submitted through their Intuit QuickBooks link and acknowledged with a "thank you for your payment" email. Despite providing this documentation, the company unilaterally canceled a scheduled service appointment the day before it was to occur, citing non-payment. When confronted with proof, the explanation shifted to a claim that they "never received the funds from the credit card company," which is not a defensible position to place on a customer after confirming receipt. These outdated business practices, inconsistent internal communication, and lack of basic financial controls introduce unnecessary risk for clients. While I had initially intended to continue using this company, the operational failures and resulting service disruption make them unreliable and difficult to do business with. There are other providers who can deliver the same service with greater professionalism, transparency, and reliability, and I will be pursuing those alternatives going forward.

I've been a customer of Certified Backflow Testing for nearly 20 years. I didn't leave over price…read moreor convenience. I left because of how they handled a mistake. After their technician serviced my backflow preventer this spring, my irrigation system stopped running. I didn't realize it right away. By the time I noticed, my lawn had already browned out and some plants were damaged. When I raised the issue, it took 2-3 weeks of back and forth to get nowhere. Certified Backflow didn't put the valve back to how they found it, which was in working condition. Their procedure states they restore valves to the position in which they are found, but they did not follow this procedure and won't take accountability for it. Management's first response was to hide behind policy rather than acknowledge what happened. They did send their GM out to look at the damage, which I appreciated. But even after seeing it firsthand, they couldn't provide any evidence that the technician left the shutoff valve in the correct position, and they offered nothing toward the damage caused. Mistakes happen. I get that. But after 20 years, I expected better. Finding a new provider.

This guy called and showed up in a half hour, fixed my sprinklers, checked all the rest of my…read moresprinklers and his price was very reasonable. Very professional and friendly.

Juan Rodriguez came to our home, took one look at the dry patches in the front lawn, made an astute…read moreobservation, did the quick repair and was done in about an hour. The guy knows his business, works efficiently and his rates are reasonable. Highly recommended.

VERIFIED THE BEST! The City of Mercer Island sent notice that we needed a backflow test. The notice…read moreincluded a list or 40 companies that were approved by the city. I loaded all 40 of them into my Claude AI program and asked the AI to tell me which one was the best. Which one had the highest ratings and had no bad feedback. It came back stating that 5 Star Backflow was the BEST of the 40 approved companies! I then called Josh, the owner of 5 Star Backflow, and he and his team worked around the clock to help me because I was up against a deadline. His communication with us was spectacular and thanks to him our water did not get cut off. We even had a complication with the backflow valve being broken, but he got it taken care of and he went way above and beyond to help us. I wish I could give him a 100 stars, because he is the real deal and he deserves a great review. If you need a backflow company, 5 Star Backflow is the absolute best! Thank you Josh!

I've been using 5 Star Backflow Services for my required city backflow inspections for years now…read moreand I've always been happy with the service, so it's probably time for a review. Once they had me in their system, they started contacting me in advance to schedule the test each year, which I really appreciate since the city notice doesn't usually give a lot of turnaround time. This year the city surprised me by sending the notice a month early, and I was on vacation when the notice came. This left me with just over a week before it was due. I contacted 5 Star Backflow Services and they were able to do the test just a couple days later. After the test they always send the report directly to the city within 24 hours. I have been very pleased with the service. Thank you!

Good service, professional We have used her services for…read moreall our jobs that require backflow testing. She is always responsive and professional. Thank you

Great service and they were able to fit me in within a week. I am very pleased. I will be…read moreutilizing Batgirl each year for my required backflow device testing.

Linda is awesome. We have used her for over 5 years and I always feel like we are in a pinch when…read morewe need her services. She responds quickly to emails and is very accommodating to your schedule. She is trustworthy, friendly and her prices are fare. Don't wait until the last minute for your back flow test:)

Prior to this last testing, I would've given a 5 star review. I have used Linda for the past 15…read moreyears and even set up testing for our HOA of 90 homes, unfortunately this will be the last time I use her. Communication was poor, paperwork was never left under the doormat and results were not submitted to the water district until I contacted her multiple times. After numerous emails over the past week, I was forwarded the paperwork which had "sample" written on it. My address also appeared to have a 4 where there should've been a 9. I was told that it was correct and submitted to the district. Upon calling the district, there wasn't a record of it. All submissions are done online and there are things in place to make sure addresses are correct. I contacted Linda again and was forwarded a screen capture of the submittal of test results. The test date was incorrect since she had come the day before. Results were not submitted until they were a week past due. I am still not sure if she actually tested since she was questioning whether or not she tested the right house.

Arrowhead is great! Saturday evening I noticed some water on my garage floor coming from the water…read moreheater. I jumped on Yelp and messaged some different plumbing companies and got a quick response from Arrowhead. After reviewing a few different estimates I felt like Arrowhead was the right choice. They seemed very honest, weren't out to nickel and dime me or take advantage of my situation. Some other plumbers had some outlandish price quotes when they found out this would be an "emergency" replacement. We agreed on the details on Sunday and they squeezed me in early Monday morning and got my new hot water heater in quickly, even showed up a bit early to get started. Install Looks good and they were also open to pulling the permit (which has saved me a couple times in the past). I'd definitely recommend Arrowhead for anyone needing a water heater or any other plumbing needs.

Arrowhead Plumbing really came through for me. I sent them a few photos of the setup, and they were…read moreable to give me a firm estimate just from the pictures, and that estimate was hundreds less than the big‑boy competitors with the fancy trucks. They replaced an old PRV and added new shutoff valves after another plumber measured my static pressure at 95 psi. The communication throughout was great: quick replies, clear explanations, no upsells. After they finished the work, they took the time to walk me through everything they'd done and what to expect going forward, which I really appreciated. Overall, just a straightforward, solid experience. I'd definitely use them again.

They are no,longer in business. Too bad. They were honest and did excellent work. The good news…read moreis they have suggested that their customers switch to Hans Plumbing which we have done and used twice with the same professional and honestly. Mark Schuerman is an important part of their operation as he has migrated to Hans! You can request Mark as we have both times!

We have been using Schuerman plumbing for over 15 years and have been completely satisfied every…read moresingle time. They are always prompt, kind and do excellent work for fair prices. We will continue to use their services as long as they are in business!

Ally Plumbing was more than fantastic. I received multiple quotes to replace my hot water heater…read moreand selected them. When they went to install the new heater they ran into a significant unforeseen condition. Multiple different people had to come to my house / the project to evaluate the issue. All of them were polite, professional, and responsive. Ally Plumbing quickly found a solution to the unforeseen condition and were able to execute the change quickly. They were in a position where they could easily have taken advantage of me, but instead chose kindness, understanding, and professionalism to resolve the issue. On top of all this, I learned they are a local business. Honestly, I have been recommending them to everyone that needs a plumber since my unfortunate incident. They are simply the best.

The price was horrendous. $575 + tax for 10 minutes job using electric snake in my clogged shower…read more I feel is steep. Other projects are charging a flat rate of $350 for this work. On top of that, I don't get any receipt of the work done or any warranty. $650 just vanished from my pocket.