How a Backflow Test is Performed: Step-by-Step Guide
How a Backflow Test is Performed: Step-by-Step Guide
Backflow testing is a crucial process that ensures drinking water remains safe and uncontaminated. If your property has a backflow prevention device, you may be required to have it tested annually. But what exactly happens during a backflow test?
This guide will walk you through the step-by-step process of a certified backflow test, explain why it’s necessary, and show you what to expect when you schedule a test with Flow State Inspections.
What is Backflow Testing?
Backflow occurs when water reverses direction due to pressure changes, potentially allowing contaminants like chemicals, fertilizers, or bacteria to enter the clean water supply. Backflow preventers are designed to stop this, but they must be tested regularly to ensure they are functioning correctly.
Annual testing is required for many properties, including those with irrigation systems, fire suppression systems, and commercial plumbing connections.
Step-by-Step Backflow Testing Process
When you schedule a backflow test with Flow State Inspections, here’s what happens:
1. Visual Inspection of the Device
Before testing begins, our ASSE-certified backflow tester will:
• Identify the type and model of the backflow preventer.
• Check for visible damage, corrosion, or leaks.
• Ensure shut-off valves are operational.
2. Temporary Water Shut-Off (If Required)
Depending on the type of backflow preventer and its location, a brief water shut-off may be necessary.
• Most tests take 15-30 minutes, minimizing interruptions.
• For businesses, we can schedule tests at convenient times to avoid disruption.
3. Connection of Testing Equipment
Our technician uses a differential pressure gauge to measure pressure changes inside the device.
• This specialized tool checks whether the internal check valves and relief valves are working properly.
4. Check Valve and Relief Valve Testing
During the test, we verify key components:
✔️ Check Valves – Ensure water flows in one direction and prevents backflow.
✔️ Relief Valve (if applicable) – Should open as needed to prevent backflow in reduced pressure zone (RPZ) assemblies.
✔️ Air Inlet Valve (if applicable) – Found in pressure vacuum breakers (PVB), this must seal under pressure and open when necessary.
5. Recording and Submitting Results
Once the test is complete, we:
• Document the results and ensure compliance with local regulations.
• Submit reports as required.
• Provide a copy of the test results for your records.
6. Repairs or Replacements If Needed
If the device fails the test, we can handle on-the-spot repairs for minor issues. If a replacement is needed, we’ll discuss the best options and get the system back in compliance quickly.
How Long Does a Backflow Test Take?
• Standard tests: 15-30 minutes
• Difficult-to-access devices: Up to 1 hour
• Repairs or part replacements: Varies based on complexity
Why Choose Flow State Inspections?
✔️ Certified ASSE Backflow Tester – Meeting all state and local certification requirements.
✔️ Fast & Affordable Service – No hidden fees, no long wait times.
✔️ Compliance Assistance – We handle the paperwork so you stay up to code.
✔️ Comprehensive Service Area – We provide backflow testing for a wide range of locations.
Schedule Your Backflow Test Today
Annual backflow testing is required by law in many cases. Stay compliant and protect your water supply—book your certified test today!
📞 Call Flow State Inspections at 303-829-8665
💻 Visit FlowStateInspections.com
