Backflow Prevention Testing
Backflow Prevention Testing | Commercial Plumbing | Plumbing | Knoxville
When Knoxville businesses need reliable protection against water contamination, they turn to HEP for certified backflow prevention testing. Our licensed specialists arrive on schedule, inspect every valve, and document results that keep you compliant with city and state regulations—all while minimizing downtime for your staff and customers. We’ve built our reputation on rapid response and clear communication, so you always know the status of your backflow devices and the next steps to stay ahead of annual deadlines.
Because backflow assemblies are only one part of a larger system, our team evaluates the entire commercial plumbing network to catch hidden vulnerabilities before they become costly shutdowns. From repairs and replacements to coordinating with municipal inspectors, HEP manages every detail and leaves your workspace as clean as we found it. Call today and experience why local property managers trust us to safeguard their water supply—and their peace of mind—year after year.
FAQs
What is backflow and why is testing required for commercial properties in Knoxville?
Backflow is the unwanted reversal of water flow that can allow contaminants from your building’s plumbing system to enter the public drinking-water supply. Knoxville Utilities Board (KUB) and the Tennessee Department of Environment & Conservation (TDEC) both enforce cross-connection control regulations that require every commercial property with a potential hazard—fire sprinkler lines, irrigation systems, boilers, laboratories, food-service equipment, etc.—to install an approved backflow prevention assembly and have it tested regularly. The testing proves that the device is working properly and protects employees, customers, and the community from possible water contamination.
How often do Knoxville codes require backflow preventers to be tested?
Under KUB’s Cross-Connection Control Program and TDEC Rule 0400-45-01, all testable backflow prevention assemblies at commercial, industrial, and institutional sites must be tested at least once every 12 months. Certain high-hazard facilities—such as medical centers, chemical plants, and facilities with reclaimed water connections—may be placed on a more frequent testing schedule at the discretion of KUB. If your property undergoes renovations or you replace a backflow preventer, a test is also required immediately after installation before the device is put back into service.
What types of backflow prevention assemblies can you test and certify?
Our licensed, ASSE-certified backflow technicians are trained and equipped to test and repair the full range of commercial assemblies, including: • Reduced Pressure Zone (RPZ) assemblies • Reduced Pressure Detector Assemblies (RPDA) • Double Check Valve Assemblies (DCVA) • Double Check Detector Assemblies (DCDA) • Pressure Vacuum Breakers (PVB) • Spill-Resistant Pressure Vacuum Breakers (SVB) We also service specialty devices such as high-flow fire-line backflow preventers and stainless-steel models used for corrosive or food-grade applications.
What does a commercial backflow test involve and how long does it take?
A standard test is conducted with a calibrated differential-pressure gauge that measures the operation of each check valve, relief valve, or air-inlet valve inside the assembly. The technician will: 1. Shut off downstream water (with your permission) to isolate the assembly. 2. Connect test hoses and record pressure readings for each stage. 3. Verify that all spring tensions and valve closures meet KUB/TDEC minimum specifications. 4. Restore water service and ensure there are no leaks or pressure issues. Most single-device tests take 20–30 minutes. Large fire-line or multi-device installations may require one to two hours. We schedule tests to minimize downtime for your business and can perform them before or after normal operating hours if needed.
What happens if my device fails the backflow test?
If any check or relief valve fails to maintain the required pressure differential—or if the assembly is leaking—our technician will document the failure on the official KUB test form and review the results with you. We carry common repair kits and replacement parts for most manufacturers, allowing us to complete many repairs on the spot and retest immediately. If a major rebuild or full replacement is required, we provide a written estimate, coordinate any necessary permits, and handle the follow-up testing once the work is done. KUB generally allows a 10-day window for corrective action before penalties or water shutoff procedures begin, so timely repairs are essential.
How do I schedule a test and what documentation will I receive for code compliance?
You can schedule by phone, email, or through our online request form. We’ll collect your device location, size, and make/model information so we arrive with the right test kit and repair parts. After the test, you will receive: • Official KUB Backflow Test Report signed by a certified tester • A copy for your internal records and insurance provider • Digital submission of the results to KUB and, when applicable, the local fire marshal • A dated inspection tag affixed to the assembly Keeping this paperwork on file satisfies annual audit requirements and proves your facility is in full compliance with local and state cross-connection regulations.