Annual backflow prevention device testing for commercial properties across Los Angeles and San Diego. Our state-certified testers perform the test, file the paperwork with your water authority, and flag any device that needs repair or replacement. $149 per device. Most commercial properties have 1–3 devices. We track your schedule so you never miss a deadline.
A backflow prevention device is a mechanical valve installed on your property's water supply line that stops contaminated water from flowing backward into the public water supply. It's required by California code on all commercial properties — and most residential properties with irrigation systems, boilers, or fire sprinkler systems.
Without one, a pressure drop in the main could pull contaminants from your building back into the public water supply, potentially contaminating drinking water for an entire block. That's why LADWP (LA) and SD County Water Authority (SD) require annual testing.
Every backflow testing service follows the same process — so you never have to think about your next test until we remind you.
Call or submit the form. We'll schedule your test within your water authority's testing window. If you're already our client, we automatically schedule based on your last test date and send you a reminder.
Our state-certified tester performs the test on all backflow prevention devices at your property. Each device is tested for proper operation, pressure differentials, and seal integrity. Test takes 15–30 minutes per device.
Test results are submitted directly to your water authority — LADWP for LA properties, SD County Water Authority for SD properties. You receive a copy of the test report for your records. Certification numbers included.
We add your next test date to our tracking system and send you a reminder 30 days before it's due. Contract clients get automatic scheduling — we just show up and test. You don't have to do anything.
We test all types of backflow prevention devices — from simple residential dual-check valves to complex commercial reduced pressure zone (RPZ) assemblies.
The most common commercial backflow device. Two check valves with a pressure differential relief valve between them. Used for high-hazard applications where contamination could be life-threatening. Requires annual testing.
Two independently operating check valves in series. Used for medium-hazard applications — fire sprinkler systems, irrigation systems, and boilers. Annual testing required.
Common on residential irrigation systems. A single check valve with an air inlet valve. Annual testing required by most water authorities for irrigation backflow devices.
Fire sprinkler systems require backflow prevention to stop stagnant water from flowing back into the public supply. We test all fire sprinkler backflow assemblies — RPZ, DCVA, and OS&Y types.
Simple backflow prevention device used on residential water heaters, boilers, and irrigation systems. Some water authorities require annual testing; others don't. We test them either way.
If your device fails the test, we'll repair it on-site if possible — most failures are due to worn seals or debris. If beyond repair, we quote replacement and install same-day if parts are in stock.
Every backflow test is $149 per device. Repair costs quoted before work begins. Maintenance contract clients get testing included free in Tier 02+ contracts.
All testing includes paperwork filed with your water authority and a copy of the test report. View full pricing page →
A backflow prevention device is a mechanical valve installed on your property's water supply line that stops contaminated water from flowing backward into the public water supply. It's required by California code on all commercial properties — and most residential properties with irrigation systems, boilers, or fire sprinkler systems.
Without one, a pressure drop in the main could pull contaminants from your building back into the public water supply, potentially contaminating drinking water for an entire block.
Annual testing is required by LADWP (Los Angeles) and SD County Water Authority (San Diego). Your water authority will send you a notice before your testing deadline. Missing the deadline can result in fines and potential water service interruption.
We track your testing schedule and send you reminders so you never miss a deadline — 30 days before your next test is due, by email and phone.
If your backflow device fails, we'll repair it on-site if possible — most failures are due to worn seals or debris that can be cleaned or replaced. If the device is beyond repair, we'll quote a replacement and install it the same day if parts are in stock.
Failed devices must be repaired or replaced within 30 days to avoid fines from your water authority.
Yes. Every test result is submitted directly to your water authority — LADWP for Los Angeles properties, SD County Water Authority for San Diego properties. You receive a copy of the test report for your records.
We track your testing schedule and send you reminders before your next annual test is due. Maintenance contract clients get this service automatically — we schedule and file without you having to ask.
Standard backflow testing is $149 per device. Most commercial properties have 1–3 devices. Repair costs vary depending on the issue — most repairs run $89–$289. Backflow replacement (if the device is beyond repair) runs $350–$800 depending on device type and size.
Maintenance contract clients get testing included free in Tier 02+ contracts.
Yes. All our backflow testers hold current state certifications as Backflow Prevention Assembly Testers (BPAT) through the American Backflow Prevention Association (ABPA) or the University of Southern California Foundation for Cross-Connection Control and Hydraulic Research (USC FCCCHR).
Certification numbers are included on every test report submitted to your water authority.
Scheduled cleaning, emergency pumping, compliance documentation. Required by LA County and SD County health departments — keep your restaurant running.
Learn moreQuarterly inspections, priority dispatch, 10% off all service calls, consolidated billing. Includes free backflow testing for Tier 02+ contracts.
Learn moreHigh-capacity tanks, commercial tankless, recirculation systems. Service, flush, descaling, and same-day replacement when needed.
Learn moreWritten by our commercial division lead — the same person who manages your account.
What LADWP and SD County Water Authority actually require, how often, what happens if you miss a deadline, and what the paperwork looks like.
Read the guideThe inspection schedule, backflow testing cadence, and three clauses every property manager should add to their vendor contracts.
Read the guideSeven questions to ask before signing a maintenance contract — from SLA guarantees to insurance certificates to CapEx planning capabilities.
Read the guideCall to schedule your test within 48 hours, or submit the form and we'll send you an available time slot. State-certified testers, paperwork filed with your water authority, schedule tracking included so you never miss a deadline.