Colorado DORA Licensed Plumber · Jefferson County (303) 552-3896

Wheat Ridge, CO · Certified Backflow Testing

Backflow Prevention in Wheat Ridge, CO: Installation, Testing, and Repair for Jefferson County Properties

Consolidated Mutual Water Company and Jefferson County regulations require annual testing of backflow prevention assemblies on irrigation systems, commercial connections, and other cross-connection applications. We install, test, and repair backflow preventers throughout Wheat Ridge.

Why Wheat Ridge and Jefferson County Require Backflow Prevention

Backflow occurs when water flows backward in a supply line, reversing direction from its normal path and potentially carrying contaminants back into the potable water supply. Cross-connections between the potable supply and irrigation water, chemical mixing systems, boilers, or other non-potable sources create the conditions for backflow when pressure drops or siphon conditions develop. Backflow prevention devices, installed at cross-connection points, create a mechanical barrier that prevents reverse flow regardless of pressure conditions.

Consolidated Mutual Water Company, which serves most of Wheat Ridge from Clear Creek and Denver Water supply facilities, operates a cross-connection control program consistent with Colorado Revised Statutes and Colorado Department of Public Health and Environment standards. Property owners with irrigation systems, boiler connections, chemical dispensing systems, or other cross-connection applications are required to install appropriate backflow prevention assemblies and have them tested annually by a certified tester. Test results must be submitted to CMWC.

The 38th Avenue commercial corridor in Wheat Ridge includes restaurants, auto services, and other commercial applications that frequently require reduced pressure zone assemblies or double check valve assemblies depending on the specific hazard level of the cross-connection. Residential irrigation systems, one of the most common backflow prevention requirements in Wheat Ridge's established neighborhoods, typically require pressure vacuum breakers or atmospheric vacuum breakers at each zone connection point.

Backflow Services We Provide

Pressure vacuum breaker installation and repair
Reduced pressure zone (RPZ) assembly installation
Double check valve assembly service
Annual backflow preventer testing and certification
Test report submission to CMWC and Jefferson County
Failed assembly repair and replacement

Types of Backflow Preventers We Install and Service in Wheat Ridge

Pressure Vacuum Breakers and Atmospheric Vacuum Breakers

Pressure vacuum breakers (PVBs) are the most common backflow prevention device for residential irrigation systems in Wheat Ridge. A PVB installs on the supply side of the irrigation system above the highest sprinkler head and prevents backflow by opening to atmosphere when supply pressure drops. They require annual testing per CMWC requirements. Atmospheric vacuum breakers (AVBs) are simpler devices appropriate for individual hose connections and do not require annual testing, but cannot be installed under continuous pressure.

Reduced Pressure Zone Assemblies

Reduced pressure zone (RPZ) assemblies provide the highest level of backflow protection and are required where the potential contamination hazard is significant, such as irrigation systems using fertilizer injectors, boiler connections, commercial kitchen systems, and fire suppression connections to potable supply. An RPZ assembly contains two independent check valves and a differential pressure relief valve, and discharges water if either check valve fails. RPZ assemblies require annual testing by a certified tester and are most commonly found on commercial properties along Wheat Ridge's commercial corridors.

Double Check Valve Assemblies

Double check valve assemblies (DCVAs) are appropriate for low-hazard cross-connections, such as irrigation systems without chemical injection, booster pump connections, and some commercial applications. They contain two independently operating spring-loaded check valves and require annual testing. DCVAs are less common in Wheat Ridge residential settings than PVBs but are frequently found on commercial properties and properties with fire suppression systems.

Annual Backflow Preventer Testing in Wheat Ridge, CO

Colorado regulations and CMWC requirements mandate annual testing of all testable backflow prevention assemblies. Testing involves using a differential pressure gauge kit to verify that each check valve, relief valve, and shut-off valve in the assembly is functioning within tolerance. A certified backflow tester performs the test, records the results on a standard test form, and submits the results to CMWC. If an assembly fails testing, it must be repaired and retested before being returned to service.

We schedule annual testing visits for Wheat Ridge properties with irrigation systems, commercial backflow assemblies, and other CMWC-regulated applications. We submit test results directly to CMWC, eliminating the paperwork step for the property owner. For assemblies that fail testing, we provide a repair estimate and can typically complete the repair in the same visit for common check valve failures or relief valve replacements. Failed assemblies that require replacement are addressed with a code-compliant assembly appropriate for the specific application.

Testing failures must be addressed promptly. CMWC may restrict water service to properties that have overdue or unaddressed backflow testing failures, and Jefferson County building code requires that all testable assemblies be maintained in functional condition. If you receive a notice from CMWC about a missed or failed backflow test, we can schedule a testing or repair visit quickly to bring you back into compliance. We serve all Wheat Ridge ZIP codes and surrounding Jefferson County communities for backflow testing and compliance service.

Backflow Prevention for Wheat Ridge Irrigation Systems and Commercial Properties

Residential irrigation systems in Wheat Ridge's established neighborhoods represent the most common backflow prevention application we service. Most Wheat Ridge irrigation installations require a pressure vacuum breaker on the supply line feeding the irrigation controller, installed above the highest sprinkler head on the property. For systems with fertilizer injection (also called chemigation), an RPZ assembly is required in place of a PVB due to the elevated contamination hazard.

For new irrigation system installations or conversions from older systems that may not have code-compliant backflow prevention, we install the appropriate assembly as part of the plumbing scope. We confirm the assembly type and installation requirements based on the system configuration, CMWC requirements for the specific service area, and Jefferson County building code. All backflow prevention installations we complete are permitted where required and eligible for the annual testing program we provide.

Commercial properties on the 38th Avenue corridor and elsewhere in Wheat Ridge with existing backflow assemblies that have not been recently tested should schedule an annual test to confirm they are in compliance with current CMWC requirements. We serve all Wheat Ridge ZIP codes and Jefferson County for commercial backflow testing and service.

Further Reading

Backflow prevention is one component of maintaining a safe and code-compliant plumbing system in Wheat Ridge. For more on the overall plumbing infrastructure in pre-1955 homes, see: Cast Iron Drain Replacement for Wheat Ridge Heritage Homes.

Frequently Asked Questions

Yes. Consolidated Mutual Water Company requires a backflow prevention assembly on all irrigation systems connected to the potable water supply. Most residential Wheat Ridge irrigation systems require a pressure vacuum breaker installed on the supply line above the highest sprinkler head. For systems with fertilizer injection or other chemical application, a reduced pressure zone assembly is required instead. Annual testing is required for all testable assemblies.
If you have an irrigation system, boiler, commercial kitchen connection, or fire suppression system connected to potable water supply, you almost certainly have a testable backflow preventer. CMWC typically sends testing notices to properties with registered assemblies. If you are unsure whether your assembly has been tested recently or is registered with CMWC, we can inspect your installation and help determine your current compliance status.
A failed backflow preventer must be repaired or replaced before being returned to service. We can typically repair failed assemblies in the same visit for common failures like check valve wear or relief valve malfunction. After repair, we retest the assembly to confirm it passes and submit the final passing result to CMWC. The repair cost depends on the specific failure and assembly type.
A pressure vacuum breaker must be installed on the irrigation supply line upstream of any zone valves and above the highest sprinkler head elevation on the property, with a minimum 12-inch clearance above the highest point of use. It must not be installed in a pit or enclosure that could flood. We confirm correct placement during installation and verify the location meets CMWC and Jefferson County requirements.
Yes. We submit all test results directly to Consolidated Mutual Water Company as part of the testing service, including both passing results and failed-assembly documentation. We provide you with a copy of the test report for your records. This eliminates the step of submitting paperwork yourself and ensures the testing record is properly filed with CMWC.

Backflow Prevention Testing or Installation in Wheat Ridge? Call Us.

We install, test, and repair backflow prevention assemblies throughout Wheat Ridge and Jefferson County. Annual testing with direct CMWC result submission included. Available for residential and commercial properties in all Wheat Ridge ZIP codes.

Call (303) 552-3896 · Available 24/7
Cast Iron Drain Emergency · (303) 552-3896