One Flow Los Angeles Backflow Installation & Repair

★★★★★ 4.7 / 5 (99)
Emergency Call


: 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, Ventura County, and San Bernardino County. We focus on fixing and installing defective backflow assemblies that ensure the safety of the water supply. We are licensed plumbers, insured up to two million dollars. As American Water Works Association Certified Cross-Connection Control Specialists, we assist countless clients across SoCal in managing their backflow systems. Our main focus is to keep your water service uninterrupted by local water authorities.

In the year 2015, One Flow L.A. began as an irrigation provider. As the company expanded, founder John Stoeckel explored new avenues for growth, leading to the creation of a backflow prevention division. When the health crisis struck, John recognized it was time to pivot entirely to backflow prevention. Since that time, One Flow L.A. has enjoyed great success and has been actively involved in the fight to keep our water safe.

Throughout my life, I have worked in the plumbing and irrigation industry. I was raised in the family business, but at 21, I chose to branch out independently. I originally launched an Irrigation Service in Orange County. After a few years of steady progress, I was driven to discover better opportunities. This enthusiasm, combined with a passion for water, led us to the backflow prevention industry. When COVID hit, we recognized it was time to focus entirely to water safety. Since then, One Flow Los Angeles has established itself 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

Michael C.
★★★★★

We called OC sprinkler service on Wednesday and our problem was fixed by Friday afternoon for half the cost of other quotes from other companies. John was polite, professional and respectful of our home. He was upfront with the costs and needs of our project. We will definitely call again for our next project.

Larry L.
★★★★★

Very happy Orange County Sprinkler Service

One of the zones in our automatic sprinkler system stopped working. We called OC Sprinkler Service on a Wednesday afternoon and they came out at 8am the next day. They diagnosed the problem for free (a 20+ year old valve had stopped working) and quoted a very reasonable price to replace the valve and surrounding plumbing in a very tight work space sunk into the patio. Repair was done in under two hours and everything works fine again. We will be very comfortable calling them back out when the next 20+ year old valve goes bad.

Valerie R.
★★★★★

John was great. Very professional with contacting me and follow up. He did everything I had planned for. I would recommend him in the future.

Paul M.
★☆☆☆☆

So here we are 6 months later and over $3000 spent and all I've for is a dead lawn!
I've had john come back twice since he installed the lawn to work on the sprinkler system and ea time it's over $250 ""sprinkler tune up""

I've had several other licensed landscape companies come out this week and they all agreed the sprinkler system wasn't installed/designed correctly.

Waste of money going with John and now I find out he isn't even licensed! I guess I'm
just screwed.....

Bryan Z.
★★☆☆☆

Spent a few hundred ($350-$400) on sprinkler repairs. Saw some pretty significant improvement in a few few areas but really no improvement in the majority. The sprinkler heads that were installed didn't provide the coverage needed or were the wrong type for the need. They consistently over shoot or undershoot. Tightening or listening the sprinkler head just controls the flow but ultimately the solution provided in this instance was inadequate. Had several issues with the new sprinkler heads installed.

Movie G.
★★★★★

I discovered that one set of sprinklers was not turning on. So I call the number and say to him that it's either the valve or a wire. John comes out and replaces the valve assembly in no time. The labor was peanuts and cost of the part was not much. he didn't break anything else like the last guy did. I will recommend John to my mom.

Mike T.
★★★★★

John was very responsive. He came out very quickly and solved the problem in minutes. I was not home and John worked with my wife and found my issue quickly. I would highly recommend John for any of your sprinkler maintenance.

Bobby M.
★★★★★

After getting several quotes from different service providers, I went with OC Sprinkler Service to convert my existing pop up sprinklers to drip lines. I did not make a mistake in hiring OCSS as they did a very professional job. Their price was also very reasonable. When other issues came up that were not part of the original quote, John was so accommodating by addressing those issues and only charged me for the cost of the parts. I strongly recommend them and will definitely do business with them again.

Michelle L.
★★★★★

John was prompt, thorough, affordable and did a great job with our sprinkler repair. I couldn't have asked for a better experience and I wouldn't hesitate to use him again.

Mariana P.
★★★★★

Orange County Sprinkler Service is reliable and affordable. John is very knowledgable and hard-working. He also patiently worked with me when we had to reschedule the repairs/ tune up several times due to my traveling. Look no further for a great company to answer to your needs!

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