Backflow Prevention Services in Temecula
Annual tests, repairs and replacements, with the paperwork your water district wants.
A backflow preventer stops water from your property flowing back into the public supply. Irrigation systems, fire sprinklers, pools, boilers and commercial equipment all create that risk. California water suppliers run cross-connection control programs under the State Water Board's Cross-Connection Control Policy Handbook, which took effect in July 2024.
If you received a test notice from Rancho California Water District or EMWD, the assembly must be tested by a certified tester and the report filed by the due date.
Backflow in the valley
1x / year
Test frequency
Testable assemblies are typically tested annually and after repair.
July 2024
State handbook in effect
The State Water Board's Cross-Connection Control Policy Handbook.
~6%
Recycled water in RCWD supply
From the 2021 report. Recycled irrigation systems have strict separation rules.
3 types
Common assemblies
RP, double check and PVB, each tested differently.
Which assembly do you have?
- Reduced pressure principle (RP). The highest protection. Required for high hazards like chemical injection, many commercial uses and some irrigation. It has a relief port that can discharge water when something is wrong.
- Double check valve (DC). For lower-hazard uses. Common on fire sprinkler lines.
- Pressure vacuum breaker (PVB). Very common on residential irrigation. Must be installed at least 12 inches above the highest sprinkler head.
What happens at the test
A certified tester connects a differential pressure gauge to the test cocks and checks each check valve and relief valve against its required values. If it passes, we file the report. If it fails, it is usually a worn rubber part, a spring or debris, and we repair and retest. Water is off for about 15 to 30 minutes.
Freeze and heat protection
Assemblies sit above ground and take Temecula's sun all summer and the occasional freezing night in winter. The record low is 15°F. Insulated covers protect against freezing. Locking cages deter theft of brass assemblies, which is a real problem on commercial sites.
Common backflow issues
RP valve dripping or dumping water
A fouled first check or relief valve.
Repair kit and retest.
PVB spraying from the top
Worn poppet or bonnet seal.
Replace the seals. Check its height above heads.
Test notice from the district
Annual compliance due.
Schedule a test before the deadline.
Cracked body after a freeze
Water froze inside the assembly.
Replace and add an insulated cover.
Our backflow service
Schedule
Send us the notice or the assembly location.
Test
Certified test with calibrated gauge.
Repair if needed
Rebuild kits for most brands on the truck.
File the report
Submitted to your water district on time.
Who needs backflow testing here
Where we see it most
Wineries and estates with large irrigation systems.
Restaurants, retail and fire sprinkler lines.
HOA common-area irrigation and park systems.
Commercial and multi-family properties on several water agencies.
Local factors that matter
Water agency programs
RCWD and EMWD both send annual test notices.
Recycled water
Recycled irrigation must stay fully separated from potable lines.
Theft and weather
Cages and insulated covers protect assemblies.
Pricing
Annual test
Flat rate per assembly, with report filing.
Repair kits
Depends on brand and size.
Replacement
Size and type drive cost.
Multi-assembly sites
Discounted per-assembly pricing for HOAs and businesses.
Questions Temecula homeowners ask
Straight answers to the calls we get most. If yours is not here, call and ask. There is no charge for a phone conversation.
Call (951) 744-8310How often does my backflow preventer need testing?
Testable assemblies are typically tested once a year, when installed, and after any repair. Your district's notice gives the due date.
Do homeowners need backflow testing?
If your irrigation or other connection has a testable assembly, yes. Many homes have a PVB on irrigation.
What if my assembly fails?
We repair it, usually same visit, and retest before filing.
Can I test it myself?
No. Tests must be performed by a certified tester using calibrated equipment.
Related services
Neighborhood pages
Got a backflow test notice?
Call (951) 744-8310 and we will test, repair if needed, and file the report.