How to Pass Your Backflow Test: A Guide for Property Owners and Managers
Published by Backflow USA
www.BackflowUSA.com | Nationwide Certified Backflow Testing
Why Backflow Testing Matters
Backflow testing is required by law in most cities and states across the U.S. It ensures that your backflow prevention device is working properly, protecting public drinking water from contamination.
Whether you’re a homeowner, property manager, or business owner, passing your backflow test is essential for staying compliant and avoiding fines, water shutoffs, or liability issues.
What Is a Backflow Test?
A certified backflow technician performs a test using a specialized gauge to check:
- If water is flowing in the correct direction
- Whether internal valves open and close properly under pressure
- That the device holds pressure and doesn’t leak
- That check valves and relief valves meet required performance specs
The process usually takes 20–30 minutes, and test results must often be submitted to your local water authority.
How to Prepare for Your Backflow Test
Getting ready for your annual backflow inspection is easy if you follow a few key steps.
✅ Preparation Tips:
- Know Where Your Device Is Located
Most devices are installed outside, near your irrigation system, fire line, or main water service. Make sure it’s visible and accessible. - Clear the Area Around the Device
Remove debris, weeds, and any obstructions. This allows the tester safe and easy access to attach equipment. - Check for Obvious Damage
Look for broken handles, rusted pipes, leaks, or freeze damage. If you see issues, schedule repairs before testing. - Turn Off Water-Using Equipment
Pause irrigation timers or avoid using water indoors during testing to prevent pressure fluctuation. - Know Your Due Date
Most municipalities require annual testing by a specific date. Set a calendar reminder to avoid late fees or violations.
Why Devices Fail (And How to Avoid It)
Even well-maintained backflow preventers can fail due to:
- Mineral deposits or sediment buildup
- Frozen or cracked parts (common in winter climates)
- Worn-out check valves or springs
- Lack of regular maintenance
- Improper installation or pressure fluctuations
To avoid failure:
- Test annually (or more often if required)
- Flush irrigation zones regularly
- Winterize systems in cold climates
- Use licensed professionals for repairs and install
- Schedule tests during low-use times
What Happens If You Fail a Backflow Test?
If your device fails:
- The tester will file a report with your water authority
- You’ll receive a notice requiring repair and re-testing
- Most cities give you 10–30 days to fix the issue
- In some cases, water service may be shut off if not corrected
Many certified testers also offer repairs and retesting — it’s smart to work with someone who can handle everything from start to finish.