Service
Backflow Prevention in Los Angeles
LADWP-compliant installation, testing, and certification of backflow prevention assemblies for commercial, irrigation, and residential fire systems.
- Licensed & Insured
- Family Owned Since 2015
- 24/7 Emergency Service
- 200+ Five-Star Reviews
Backflow prevention is the valve-and-assembly technology that keeps non-potable water (irrigation, fire suppression, commercial process water) from contaminating your building's drinking water supply. LADWP and every surrounding jurisdiction requires certified backflow devices on commercial properties, multi-unit buildings, irrigation systems, and any property with a fire line. They also require annual testing and certification by a trained tester. We handle both ends: install the device, then test and certify it every year.
What's Included
RPZ Device Installation
Reduced-Pressure-Zone backflow preventers — the gold standard for high-hazard applications. New construction, retrofits, and replacements. Sized from 3/4" residential up through 3" commercial.
Double-Check Assembly Install
DCV devices for low-hazard applications like lawn irrigation in single-family homes. Less expensive than RPZ, code-appropriate where allowed.
Annual Testing & Certification
AWWA-certified testers on staff. We run the test, fill out the LADWP submittal form, and mail in the certification — your records stay clean.
Enforcement Response
Received a notice from LADWP or your local water purveyor? We handle the emergency inspection, repair or replace as needed, and get your property back in compliance fast.
Commercial Kitchen Specialty
Restaurants, food service, and bars — often have multiple backflow assemblies (ice machine, pot filler, three-compartment sink). We test the whole system in one visit.
Cross-Connection Survey
For larger commercial properties, a cross-connection survey identifies every point that needs backflow protection and prioritizes upgrades before a water purveyor audit does.
How It Works
- Call us. A real person answers — no call center, no voicemail.
- We diagnose free. Onsite assessment with upfront quote before any work starts.
- We fix it right. Permits where required, clean work, two-year labor warranty.
- We follow up. Quick check-in after any significant job to make sure it's holding.
Cities We Serve
We deliver this service across the San Fernando Valley and Greater LA. Closest response:
Frequently Asked Questions
What is backflow and why does it matter?
Backflow is when non-potable water reverses direction and enters the potable supply — usually during a pressure event like a water main break or fire-hydrant flushing. A backflow preventer is a one-way check that physically blocks reversal. Without one, your building could contaminate the neighborhood's drinking water.
Does my home need a backflow preventer?
A single-family home with no lawn irrigation system typically doesn't. Homes with irrigation systems, fire sprinklers, or auxiliary water sources (a well, a pool line) do. Multi-unit and commercial properties always do.
How much does backflow testing cost in LA?
Annual testing is $185–$275 per device including the LADWP submittal. Multiple-device discounts apply — a commercial property with 4 assemblies runs $450–$650 total.
How much is a new backflow install?
New RPZ install for a 1" commercial service: $1,400–$2,400 depending on configuration. New DCV install for a 3/4" irrigation: $650–$950. Prices include the device, installation, initial test, and certification.
I got a notice from LADWP. How fast can you respond?
We prioritize compliance cases — typically on-site within 48 hours. We can also file a brief compliance-intent letter with LADWP to buy time if repairs require a specialty part.
Ready to Get It Fixed?
Call us now or send a message — we respond in minutes, not hours.