One Flow Los Angeles Backflow Installation & Repair

★★★★★ 4.7 / 5 (99)
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: Long Beach, CA 90807
: (310) 753-7325
: http://oneflowlosangeles.com

Company Overview

Qualified specialists in backflow prevention installation and repair serving corporate customers throughout the greater Los Angeles area, the Ventura region, and the San Bernardino area. We focus on repairing and replacing failing backflow assemblies that ensure the safety of the water supply. We are authorized plumbers, covered up to $2,000,000. As AWWA certified backflow testers, we assist thousands of homes and businesses across the Southern California region in managing their backflow systems. Our top priority is to keep your water service uninterrupted by local water authorities.

In 2015, One Flow L.A. started as an irrigation provider. As the operation developed, founder John Stoeckel sought new avenues for growth, leading to the formation of a backflow prevention division. When the pandemic struck, John understood it was time to shift focus entirely to backflow prevention. Since that time, One Flow L.A. has enjoyed remarkable growth and has been dedicated in the fight to keep our water safe.

Throughout my life, I have worked in the plumbing and irrigation industry. I grew up in the family business, but at 21, I decided to start my own venture. I originally launched an irrigation business in Orange County. After a few years of consistent growth, I was enthusiastic to explore better opportunities. This enthusiasm, combined with a passion for water, guided us into the backflow prevention industry. When the crisis hit, we understood it was time to focus entirely to water safety. Since then, One Flow Los Angeles has emerged as a leader in backflow prevention.

Business Services

  • Plumbing inspection
  • Plumbing installation or replacement
  • Plumbing repair

Business Location & Hours



Mon:7:00 AM - 8:00 PM
Tue:7:00 AM - 8:00 PM
Wed:7:00 AM - 8:00 PM
Thu:7:00 AM - 8:00 PM
Fri:7:00 AM - 8:00 PM
Sat:9:00 AM - 5:00 PM
Sun:9:00 AM - 5:00 PM

Recommended Customer Reviews

Kent E.
★★★★★

What I liked about John, was he did all the repairs needed, while I was at work. I hired him over the phone, he gave me a quote and I said yes. When I got home, everything was perfect. Quick, reliable and fair.

Robert H.
★★★★★

I had two valves leaking and John came out and replaced them and wired up a new rain bird timer very quickly. Reasonable prices too.
I have hired John three times now and he is excellent!

Update 6/3/2017
One of the valves from two months ago was leaking. John came out today and replaced it PLUS installed backflow prevention valves on two zones!
This was at zero additional cost.

John is a real pro and stands by his work.
Excellent service John!

Thanks sgain

Anne Q.
★★★★★

John is great. He and another guy put in a drip system in my large backyard. Had to come back twice, but he never complained. I would recommend.

Mike L.
★★★★★

John was able to come out days earlier than scheduled due to a cancelation. It was so nice to have a contractor who will text you with updates on his arrival time as well. He gave me the most honest and competitive quote. Explained everything he would do and in a very timely manner. John performs the work with his guys so you know your getting exactly what was quoted. John is also a really good guy and I would recommend him to anyone.

Jim C.
★★★★☆

John was very professional. He evaluated our project and emailed a price quote for different portions of our project. Once we proceeded with the project, John was prompt and did quality work. He is busy and did have to leave from time to time. A little better communication on when he was going to leave and return would have been nice but overall very pleased with how he and his coworker completed our project. He pointed out a couple of issues that we didn't catch on the initial project walk and also took care of the additional work without any issue.

Darryn J.
★★★★★

I got a quote from John based on the Yelp reviews. He came out quickly, gave a reasonable quote and reworked all of my old sprinkler valves quickly. Also installed a new outdoor timer and rewired the valves. Looks great and works great. Definitely recommend.

Jared C.
★★★★★

I work 8 - 5 and John made time in the morning according to my schedule. He got the job done quickly and checked his work. Very trustworthy and knowledgeable.

David T.
★★★★★

John was on time, very friendly business owner. Extremely fair price to fix a sprinkler head and replace wires to my solenoids that my dogs chewed off. Very pleased with his service and did the job in a timely matter.

Cassie M.
★★★★★

John and Orange County Sprinkler Service were by far the most competitive quote we received when looking to have our irrigations system fixed (compared to two additional local companies).

John was also extremely professional and hard working. Our job ended up taking some additional work (an understatement) and John problem solved and worked very hard to resolve the additional issues. The additional costs were also more than reasonable for the extra work that was not part of our original quote.

We are extremely happy with the high quality job John did on our property in Yorba Linda and we would highly, highly recommend him to anyone.

Thank you, The McIntyres

Bonvirak P.
★★★★★

Water was pouring out of two anti-siphon valves on the sprinkler system. Saw John and hit him up. He came the following day and fixed the entire system like a boss. Went over every part of the system, their functions and showed me where the shut-off valve was for the sprinkler system. John was polite, displayed vast knowledge and exemplified excellent skill. Would definitely recommend!

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