- HEP Plumbing
- Backflow Prevention

Backflow Prevention
Backflow Prevention | Commercial Plumbing | Plumbing | Coalmont
Safeguard your Coalmont facility’s water supply with HEP’s specialized backflow prevention services. Our certified technicians install, test, and maintain state-of-the-art devices that stop contaminants in their tracks, ensuring your operation meets state and local codes while protecting employees, customers, and the community.
From restaurants and factories to multi-tenant complexes, we tailor each solution to the unique demands of commercial plumbing, keeping downtime to a minimum and compliance at the forefront. Enjoy transparent pricing, 24/7 emergency response, and the confidence that comes from partnering with a team that’s been protecting Tennessee’s water for decades.
FAQs
Why is backflow prevention critical for commercial properties in Coalmont?
Commercial buildings typically have larger, more complex plumbing systems than homes and often connect equipment—such as fire-sprinkler lines, chemical dispensers, boilers, and irrigation systems—that can introduce contaminants into the potable water supply if reverse flow occurs. A properly installed and maintained backflow prevention device stops used or contaminated water from siphoning back into the city main, protecting your staff, customers, and the wider Coalmont community. Local ordinances and the Tennessee Department of Environment & Conservation (TDEC) also mandate backflow protection for most commercial water service connections, so compliance avoids fines and shutdowns.
What types of backflow prevention devices do you install and service?
We install, test, repair, and replace all common commercial backflow assemblies, including Reduced-Pressure Principle Assemblies (RP or RPZ), Double Check Valve Assemblies (DCVA), Pressure Vacuum Breakers (PVB), Spill-Resistant Vacuum Breakers (SVB), and detector assemblies for fire-protection systems. Our technicians are manufacturer-trained and carry parts on the truck for popular brands like Watts, Febco, Ames, and Wilkins, enabling most repairs to be completed during the same visit.
How often does Tennessee law require my backflow device to be tested?
TDEC rules and Coalmont’s cross-connection control program require a certified test on every commercial backflow prevention assembly at least once per calendar year. Certain high-hazard applications—such as medical facilities, chemical plants, or systems with booster pumps—may require more frequent testing as specified by the water purveyor. Tests must be performed by a state-certified backflow inspector, and the signed test report must be filed with the Coalmont water department within 30 days of the test date.
What is involved in a commercial backflow test and how long does it take?
A certified tester will shut off downstream water, attach calibrated differential-pressure gauges to the test ports, and verify the function of check valves, relief valves, and air inlets under both normal and reverse-flow conditions. They will record opening pressures, leak rates, and any failures on the state-approved form. A routine test on a single 1"–2" assembly takes about 20–30 minutes, while larger or multiple devices may require an hour or more. If a device fails, minor repairs can often be made on the spot; otherwise, a follow-up visit will be scheduled.
Will your company handle the paperwork with the city of Coalmont and water authority?
Yes. After each test or repair, we complete the Tennessee Multi-Purpose Test Report, attach our calibration certificate, and submit everything electronically to the Coalmont water department or your designated water purveyor. You receive a digital copy for your records, and we keep a reminder in our system so you’ll be notified well in advance of next year’s due date.
How much does a commercial backflow test or installation cost and what factors affect the price?
Annual testing for most 1"–2" commercial assemblies starts around $95 when scheduled with other local properties, while larger diameters (3"–6") range from $150–$300 due to additional time and equipment. Installation costs vary widely—typically $450–$1,200 for small RPZ or DCVA units and several thousand dollars for large fire-line detectors—depending on pipe size, device type, location accessibility, required excavation, and permit fees. We provide a free on-site estimate that details labor, materials, city permit charges, and any follow-up testing so you can budget accurately.