Backflow Testing
Done Right — The
First Time.
Certified testing, repair & installation for residential, commercial, and industrial properties across six Southern California counties. Licensed, bonded & insured.
Complete Backflow Services
Every truck rolls out fully stocked — so we diagnose, test, and repair on the spot. Any assembly, any make, any size.
Testing & Certification
Certified annual testing on all device types — DCVA, PVB, RP/RPZ, SVB, and fire lines — with compliance docs filed to your water authority.
Learn more →Anti-Theft Protection
With scrap metal prices at record highs, backflow theft is surging. We secure your assembly before it becomes a target.
Learn more →Repair & Replacement
Fast, dependable repairs on any assembly. Trucks stocked with a full parts inventory means most repairs are completed on the first visit.
Learn more →Cross Connection Survey
Certified specialists evaluate your plumbing to pinpoint contamination risks and bring your property into full compliance.
Learn more →Calibration & Certification
Our state-of-the-art lab handles precision repair, testing, calibration, and certification of gauges, meters, and valves.
Learn more →Waterline Disinfection & Pressure Testing
Data-driven hydrostatic pressure testing and waterline disinfection that keep your system safe, compliant, and contamination-free.
Learn more →Property managers, HOAs, and homeowners across Southern California trust Atlas — and they say so.
Read all reviews on Google"Very professional — they even texted me a photo of the technician before he arrived, and he showed up right at the time stated. Quick and easy."
"I called and they came out the next day for my backflow test — and charged me half of what I'd been paying. Great job. I'll definitely use them at my other locations."
"I called Victoria in the office and she had a technician out within the hour. The completed test and invoice were emailed to me with several ways to pay."
Nearly 20 Years Protecting SoCal's Water
Founded in Long Beach in 2007 and headquartered in Signal Hill, our team of five full-time certified testers serves LA, Orange, Riverside, San Bernardino, San Diego, and Ventura counties. We're the specialists other companies call for the tough repairs.
Real Jobs, Real Results
A look at recent testing, repairs, and custom theft cages across Southern California.
No Hidden Fees. Ever.
Straightforward rates for standard testing in LA & Orange County. Repairs and installs are always quoted in writing before we start.
Frequently Asked
Do you charge more for larger or higher-hazard devices?+
Do you service areas outside LA and Orange County?+
What if my device fails the test?+
Do you offer discounts for multiple devices or properties?+
Request a Free Quote
Tell us what you need and we'll get right back to you. For emergencies, call or text 24 hours a day.
We'll respond within one business day.