Backflow Prevention & Testing
Annual backflow testing, certification, and device installation to keep your property compliant with local regulations.
Professional Backflow Prevention & Testing in Orange County
Backflow prevention is a legal requirement for commercial properties in Orange County. Backflow occurs when contaminated water flows backward into the clean water supply, posing serious health risks. Every commercial property with an irrigation system, fire sprinkler system, or connection to potentially hazardous equipment must have certified backflow prevention devices that are tested annually.
KCB Plumbing provides certified backflow testing, installation, and repair services for commercial properties throughout Orange County. Our technicians hold the required backflow tester certification and submit test reports directly to your local water district on your behalf. We make compliance simple and stress-free.
Missing your annual backflow test can result in fines, water service shutoff, or both. We track testing schedules for our commercial clients and send reminders when testing is due, so you never miss a deadline. We can also be your go-to for new device installations when adding irrigation or fire systems.


Need Backflow Prevention & Testing?
Call for a free over-the-phone estimate. Upfront pricing, no surprises.
(714) 894-6520Our Process
How It Works
Device Identification
We locate and identify all backflow prevention devices on your property and verify their type and condition.
Certified Testing
Each device is tested using calibrated test equipment per AWWA standards and local water district requirements.
Repair (if needed)
If a device fails testing, we diagnose the issue and make repairs or recommend replacement.
Documentation
We complete all required test reports and submit them to your water district, keeping copies for your records.
Scheduling Next Test
We note the next required test date and contact you when it's time to schedule.
Why Choose KCB for Backflow Prevention & Testing
- Upfront flat-rate pricing — you approve before we start
- Licensed (#604044), insured, and bonded
- 99.9% on-time guarantee
- 4.9 stars across 50+ Google reviews
- 27+ years serving Orange County
- Workmanship guarantee on all repairs and installations
What Affects Pricing
We provide transparent, upfront pricing before any work begins. Here are the factors that affect the cost of backflow prevention & testing:
- Number of backflow devices to test
- Type and size of device (RPZ, DCVA, PVB)
- Whether repairs or replacements are needed
- Multi-property or multi-device discounts available
Common Questions
Backflow Prevention & Testing FAQ
How often is backflow testing required?
Most Orange County water districts require annual testing of all commercial backflow prevention devices. Some high-hazard installations may require more frequent testing. We track your schedule and notify you when testing is due.
What happens if my backflow device fails the test?
If a device fails, it needs to be repaired and retested. Common failures include worn seals, debris in the check valves, or relief valve issues. Most repairs can be completed on-site the same day, and we retest immediately after the repair.
What types of backflow devices are there?
The three most common types are Reduced Pressure Zone (RPZ) assemblies, Double Check Valve Assemblies (DCVA), and Pressure Vacuum Breakers (PVB). The required type depends on the degree of hazard — RPZ for high-hazard connections, DCVA for low-hazard, and PVB for irrigation systems.
Can you install new backflow prevention devices?
Yes, we install all types of backflow prevention devices for new connections, renovations, or upgrades required by your water district. We handle sizing, installation, initial testing, and all paperwork.
Backflow Prevention & Testing Throughout Orange County
We provide backflow prevention & testing services across all of Orange County. Click your city to learn about local plumbing needs:
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