Common Reasons Backflow Devices Fail

Backflow assemblies are mechanical devices, and like all mechanical systems, they wear down over time. The most common reasons for failure include:

• Debris trapped inside the checks or relief valve
• Worn-out internal parts such as springs, seals, or poppets
• Mineral buildup from hard water
• Freeze damage or exposure to extreme temperatures
• Incorrect installation or missing components
• Low water pressure or pressure fluctuations during testing
• Age-related wear from years of operation

Many failures are routine and can be repaired quickly once identified by a certified tester.

What to Do Immediately After a Failed Test

If your backflow assembly fails, the most important step is immediate communication. Water providers expect quick action, and keeping them informed helps prevent fines, penalties, or service interruptions.

Here’s what to do:

• Notify your local water authority as soon as you receive the failing result.
• Let them know you are working to correct the issue and request additional time if needed.
• Stay in contact with your tester or repair technician throughout the repair process.
• Keep your water provider updated until the device is fixed and re-tested.
• Ensure a passing test report is submitted as soon as repairs are complete.

Most water providers appreciate proactive communication it shows responsibility and helps keep your property in good standing.

Common Repairs After a Failed Test

Backflow assemblies are made up of internal components that wear out over time. When a device fails, repairs usually involve replacing or rebuilding specific parts rather than replacing the entire unit.

The most common repairs include:

• Replacing worn springs, seals, rubbers, or poppets
• Cleaning debris lodged in the checks or relief valve
• Rebuilding internal components using manufacturer kit parts
• Fixing or replacing shutoff valves that no longer hold
• Correcting installation issues such as missing hardware or fittings
• Repairing freeze damage or cracked housings (when possible)

Most repairs can be completed the same day or within a short timeframe, depending on part availability. Once repairs are complete, the device must be re-tested and pass before returning to compliance.

Why You Shouldn’t Delay Correcting a Failed Test

A backflow device protects your drinking water and your community’s water supply. When a device fails, delaying repairs can create compliance, safety, and financial issues.

Potential consequences include:

• Notices, fines, or penalties from your water provider
• Temporary water service interruptions for non-compliance
• Increased repair costs if the device continues to degrade
• Liability concerns if a backflow event occurs
• Additional inspections or administrative requirements
• Larger operational disruptions for commercial properties

Most problems are avoidable by communicating with your water authority and taking action quickly after a failed test.

Simple Ways to Reduce the Chance of Failure

While backflow assemblies are built to be durable, they still require basic care. Property owners can take several simple steps to keep their device in good condition and reduce the likelihood of a failed test.

Helpful prevention tips:

• Keep the device above ground and protected from flooding
• Ensure freeze protection during winter months
• Avoid burying or enclosing the assembly in tight spaces
• Clear vegetation, soil, or debris from around the device
• Repair small leaks or drips as soon as they appear
• Have a certified tester inspect any unusual noises or water discharge
• Maintain proper installation height and orientation
• Schedule repairs promptly instead of delaying them

Good maintenance not only helps prevent failures it can extend the life of the assembly and reduce repair costs over time

Frequently Asked Questions

Do I need to replace the entire device if it fails?
Usually not. Most failures can be corrected by repairing or rebuilding specific internal components.

How long do I have to fix a failed device?
Deadlines vary by water provider, but most allow extensions as long as you communicate clearly and show that repairs are in progress.

Can I continue using water if my device fails?
Yes, in most cases. However, some commercial properties may face restrictions if there is a high-risk cross-connection.

Who is responsible for repairs?
Property owners are responsible for maintaining and repairing their own backflow assemblies.

Can I repair the device myself?
Repairs must be performed by a certified tester or licensed professional in most jurisdictions. Water providers rarely allow self-repair.

Does the device need to be re-tested after repairs?
Yes. A passing test report must be submitted after the repair is completed to return the property to compliance.

How often should I test to avoid failures?
Annual testing is required in most regions, but older devices or high-use systems may benefit from seasonal or semi-annual inspections.