Best Backflow Preventer Maintenance in Irvine CA

My fire bell had been randomly going off for months. By recommendation of a neighbor, I had called a plumber to fix it. He installed some expensive new plumbing which I believe helped stabilize the water pressure, but I was disappointed to discover that it did not fix the fire bell. I called CA Fire Protection and Backflow. The dispatcher was very kind and let me know that a tech would call me ASAP - which they did. Anthony was very friendly and was able to come out within a few days. He made an adjustment to a sensor and voila! Bell fixed. I should have call CA Fire Protection and Backflow much sooner!  Thank you!

Had a backflow on my property for years and it wasn't​ until recently that I was mandated by the city to have it inspected. I called one flow and spoke to John who happened to be the owner. After a brief conversation on backflows, he realized he wasn't too far from my property and told me he could stop by after his current appointment. Upon arriving he gave me a crash course on the device and the importance of testing backflows. He then gave me a quote before any work was done (a real rarity with contractors). John provided​ Great customer service and provided testing the same day I​ called​! I will be using john and one flow for all my backflow needs in the future!