What Is a Backflow Device?
A backflow device prevents contaminated water from flowing backward into your clean water supply. These devices are required on irrigation, fire, and commercial systems to protect public health.
Common Types of Backflow Devices
Backflow devices come in several types, each designed for different property needs and hazard levels. Certified testers commonly work with RPZs, DCVAs, PVBs, and SVBs to keep water safe and compliant with regulations.
Reduced Pressure Principle Backflow Preventer (RPZ)
Reduced Pressure Principle Backflow Preventers (RPZ) are used where backflow could introduce contaminants into the clean water supply. Common uses include: irrigation systems, fire protection systems, boilers, industrial facilities, medical & labs, food & beverage, and cooling towers.
Double Check Valve Assembly (DCVA)
Double Check Valve Assemblies (DCVA) use two check valves in series to protect against low-to-medium hazard risks. Common uses include: irrigation systems without fertilizer injection, fire sprinklers, commercial plumbing, and residential/multi-family complexes.
Pressure Vacuum Breaker (PVB)
Pressure Vacuum Breakers (PVB) prevent contaminated water from being siphoned back into clean water systems. Common uses include: lawn irrigation, sprinkler systems, garden hose connections, and light commercial applications.
Spill-Resistant Vacuum Breaker (SVB)
Spill-Resistant Vacuum Breakers (SVB) are a variation of PVBs designed to reduce the chance of discharge in indoor or controlled environments. Common uses include: indoor water lines, equipment where spillage must be prevented, and certain commercial irrigation systems.
Federal Standards for Devices
Backflow devices are designed under strict standards set by the EPA Regulations, ensuring water safety nationwide.
Learn About EPA RegulationsHow Backflow Devices Are Tested
Certified testers perform backflow testing to confirm each device is working as intended. The process includes measuring water pressure, checking valve operation, and verifying there are no signs of back-siphonage or back-pressure. After completing the test, results must be documented and reported to the local water authority, ensuring compliance with state and municipal requirements.
Testing Procedures
During a test, the technician will:
- Measure water pressure and check valve operation
- Confirm relief valves open at the correct point
- Ensure there is no back-siphonage or back-pressure
Tester Documentation & Reporting
Once the test is complete, the technician records the pressure readings, time, and date of service. These results are then submitted to your water provider. Depending on the district, this may involve filing online through a third-party portal, delivering the certification directly to the water authority, or even scheduling review with a city or utility inspector. No matter the process, be sure to request a copy of the test results for your own records.
Cross-Connection Control Programs
Testing is guided by local Cross-Connection Control Programs which establish procedures and reporting requirements to keep municipalities compliant.
Explore CCCP StandardsWhy Do I Need Backflow Testing?
Backflow testing protects public drinking water and helps property owners stay compliant with local and state regulations. Regular testing prevents costly fines and ensures devices are working properly.
Learn More About Backflow TestingState Program Requirements
Every property owner must comply with State Backflow Programs which outline testing requirements unique to each region.
View State Backflow ProgramsHow Much Does Backflow Testing Cost?
Backflow test pricing varies by property type and device count. Most residential tests fall within common ranges. For full details, see our testing prices guide.
View Backflow Testing PricesBackflow Repairs and What Happens If Devices Fail
Failed devices may need repair or full replacement. Understanding options helps avoid disruption and maintain compliance.
Learn More About Backflow RepairsRepairs and Compliance
When devices fail, repairs ensure your system continues meeting EPA Safe Water Standards helping avoid costly fines and protecting public health.
Learn About EPA StandardsWhy Choose BackFlowRates?
BackFlowRates.com offers convenience, unlimited tester listings, and compliance-friendly resources for property owners and testers.
Discover Why Choose BackFlowRatesOne Platform for Every Standard
BackFlowRates connects every layer of compliance from EPA Regulations to Cross-Connection Control Programs and State Backflow Programs. Testers and property owners can finally trust one platform for clarity and convenience.