Set it up, they get it done, reasonable price. What else could you ask for? I have passed every…read moreyear without studying for the test!

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!

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!

The owner freaked out and started screaming "Seattle Fagxots!" over and over like he was insane…read more He's a tool, his name is Tony Damele and he's creepy AF.

Read the low reviews. They say it all. Plenty of other companies in the area that will value your…read morebusiness and be respectful.

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.

It feels like all the Backflow companies want to just take your money and expect you to trust them…read moreto do the test for you at some point before it's due. Oh, but you have no idea whether that's this week, next month, 4 months from now - who knows! Not Backflows Northwest. I called them to make sure the rates were accurate, and to get an idea of when they would do the test. The guy was super nice, and he said he'd do the test on Wednesday, and they said they'd leave a note on the door when it was completed. They did it a day early, and left the note on the door just like they said. This was exactly the ideal experience in my opinion, so I strongly recommend them!

Their technician showed up, presented me with a piece of my equipment that was now broken (wasn't…read morebefore they arrived) & said he could NOT do the test because it was broken. The company then billed me over $75 for the test that was never performed. No matter how much I argued or what proof I provided they demanded payment. Additionally, I subsequently had to pay another company to fix what they broke and to perform the test. If I could rate them negative 10 I would!

ran into a water leak while installing flooring. DM Kelly came out next morning and fixed my mess…read more Trevor did an awesome job and got me back going.

5 stars is not enough for this amazing business. DM Kelly Mechanical went above and beyond in…read moresaving the day for my elderly mom that had not one, BUT TWO plumbing issues at once. I was out of town when we learned her kitchen faucet was spewing water from the spray hose. On top of that we noticed her water bill had recently spiked and Barry found a massive leak under the crawl space due to a broken gate valve. He jumped on both issues and went out of his way to source a new faucet assembly then professionally replaced the sink faucet. He then cut and replaced the ball valve under the crawl space and re-insulated the assembly to protect it from the weather. Get this! I am out of town and my mom was so upset about the simultaneous issues, she broke out in tears and Barry stopped working, then took the time to sit on the couch to comfort her. Capable, kind and compassionate! Kolton took our original call and is a perfect gentleman and consummate professional, he scheduled us right away and he returns phone calls. DM Kelly Mechanical has set the standard for outstanding service and are simply wonderful people. They have our highest recommendation.

Prompt, friendly service. They make scheduling your backflow appointment easy! Additionally, once…read morethe test is complete, they send the results directly to the water company.

Matt is awesome! He is very professional. I've used Matt for 3 years now. My recent backflow for…read moremy home failed and Matt was able to point us to the right direction and even came back without a charge. He filled out all the necessary paperwork and forward them to our utility company. Highly recommended.

I recently had a problem that I attempted to correct myself and ended up needing help. My toilet…read morehad a leak because the wax ring was old and falling apart. So naturally, I did some research and ended up contacting Zoom Drain. They wrote me back immediately and were able to send out Jeremy Linson to come out and give me a quote, it was a little spendy, but worth it due to his technical proficiency, expedience, and willingness to spread some knowledge, plus I got hooked up with a minor discount! A big shout out and thank you to Zoom Drain and your tech Jeremy, if I have issues in the future you guys will be my first contact! Thanks You

Did not get the job done, left my side yard with inches of muck and mud and my garage door was…read morecovered in mud. When I brought it up, I was basically called a liar and that the crew left the work area in great shape. Took me hours to clean up their "great shape". Would not recommend.

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.