Quick and professional service. I have been using them for five years and always excellent.read more

My neighbor to recommended this family owned business, and we will be lifetime customers. Excellent…read moreservice, on time, completed as promised, easy to schedule, no hassle. Could not be happier. If you need Backflow testing - this company is a definitely must!

Devin responded quickly to my inquiry, was timely and prompt for my irrigation repairs. He was…read morevery professional and knowledgeable about all the aspects of my 12 zone system. I highly recommend him. Several other companies I contacted did not even have the courtesy to return my call. Use Devin.

REGRET REGRET REGRET! HE CUT/DAMAGE OUR SEPTIC LINE, CREATED A LEAK IN THE NEW LINES, AND THEN…read moreBAILED WITH OUR MONEY. I hired Devin to add on to our existing sprinklers, add drips systems, add water access in back lot, and modify existing sprinkler heads. We met in person where he gave us the estimate. He said it would take 1 week. 3 weeks later he was not done. He never found the leak he created because he covered part of the yard up before testing it. Eventually, he stopped answering all calls and texts and never came back. Our yard is still torn up in places and he didn't finish the job. Now we have to have the septic fixed and finish his job. As soon as he screwed up and he had our money he disappeared. He increased the price past the high quote almost immediately then tried to increase again to 40% higher than the high quote. He left the leak running a couple of days because he didn't shut the valve off when he left. We are left with a terrible mess.

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.

I've been a long time customer of Certified Backflow Testing. I have had nothing but great service…read morefrom them. From experience I. have no problem recommending them

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.

Matt from Cascade Plumbing was great! Did work for us twice and have been reasonable pricing…read moreespecially since we have had him before. Arrived at the time he noted he would arrive. Overall, great service, great communication, and respectable! Definitely recommend!

When calling they answered right away or returned my calls promptly. Mike came arrived, did an…read moreevaluation and gave us very reasonable advice to which way we should proceed. He is very fair, and knowledgeable and wouldn't trust anyone else. Value- Quantity -- promo and Honest. You can't go wrong.

I accidentally rated you a 1 Star instead of 5, so sorry. I was unable to use you because of time…read moreissues, but you were very responsive on line and the phone.

Great job, very timely and took a good bit of time to locate the place that needed to be checked as…read moreit was buried under mulch when we purchased the home. He even marked it with some rocks for next time! Thank you!

Outstanding Service from Duwamish Plumbing!…read more I recently had Duwamish Plumbing out to fix a leaky tub and replace the faucet and drains on a Roman tub. It was a tricky job that required accessing the fixture through the ceiling, but they handled it with total professionalism and skill. From the beginning, communication was excellent. He was responsive, clearly explained the work that needed to be done, and worked me into his busy schedule without delay. He showed up on time, was friendly, professional, and efficient throughout the entire process. The work was done flawlessly, and the pricing was very reasonable--especially given the complexity of the job. I couldn't be happier with the result and highly recommend Duwamish Plumbing to anyone looking for reliable, high-quality plumbing service.

Highly recommended. Great customer service!!! Had a Costco washing machine install "issue" that…read moreDuwamish Plumbing handled quickly. Very pleased. Will definitely use moving forward.

We highly recommend Backflow Only. The technician showed up right on time, corrected an issue with…read morewith the valve that the last company had installed incorrectly, without charging us. We will be using this company from now on. Don and Michele

Excellent service and reasonable prices. My service was done with very short notice as the testing…read moredeadline approaching soon.

They are professional and easy to work & comminate with, and always complete the job timely.read more

I haven't used another backflow service, but I can't imagine anyone could top Terry's service. Been…read moreusing her for 10yrs. If I follow her around & she explains what she's doing. She explained in detail: allowing mole mounds inside valve boxes causes corrosion of the valves which means they malfunction & need to be replaced -- keep moles out by brick bottom & sealed holes. If a part is bad, she has the replacement. When she's done, your sprinkler valves are set for the season.

Our technician Garrett was great. The first scheduled appointment ​was missed due to another job,…read morebut it was rescheduled for soon after, and Garrett did an excellent job. He was efficient, resourceful, inventive with solutions, and successful in his work. Couldn't be happier with the result. Big time recommend. ​​

A leaking kitchen faucet prompted my call to them. What impressed me the most was that they manned…read moretheir phones on the weekend and were able to schedule me within two days of my call. Mick came on time, was professional and efficient. A follow up was needed and scheduling, again, was easy. Crimson, the second plumber, was also prompt and efficient. They are now in my phone contacts for any future plumbing needs!