Backflow Prevention
Backflow Prevention | Commercial Plumbing | Plumbing
When contaminated water reverses direction, it can jeopardize an entire building’s water supply—and your reputation. HEP’s backflow prevention specialists safeguard restaurants, factories, offices, and multi-unit properties with meticulous testing, installation, and maintenance that keeps potable lines pure and operations compliant. From reduced‐pressure zone assemblies to double-check valves, our team selects, sizes, and installs the right device for your unique commercial plumbing configuration, then files all state and municipal paperwork so you don’t have to.
Every technician is cross-connection certified, equipped with calibrated gauges, and available 24/7 to troubleshoot sudden pressure changes before they become code violations or costly shutdowns. Schedule a preventive inspection or sign up for an annual service plan, and experience how HEP turns complex commercial plumbing challenges into simple, worry-free solutions—all backed by transparent pricing and a workmanship guarantee.
FAQs
What is backflow and why is it a concern for commercial properties?
Backflow is the unwanted reversal of water flow in a plumbing system, allowing contaminated or non-potable water to enter the clean water supply. In commercial buildings, pressure fluctuations from equipment, fire-suppression systems, or large water demands can create back-siphonage or back-pressure conditions. If a backflow event occurs, chemicals, bacteria, or other pollutants from boilers, process lines, or irrigation systems can enter the potable water, posing serious health risks and potentially violating local regulations.
Which types of commercial properties are required to have backflow prevention devices installed?
Most jurisdictions mandate backflow prevention for any commercial facility that presents a moderate to high risk to the public water supply. This typically includes restaurants and food-service operations, medical and dental clinics, manufacturing plants, laboratories, laundromats, car washes, multi-story office buildings, and properties with fire sprinkler or irrigation systems. Local plumbing codes or water authority rules ultimately decide the requirement, so a site-specific assessment is essential.
What kinds of backflow prevention devices are available and how do I choose the right one?
Common commercial devices include: • Atmospheric Vacuum Breakers (AVB) – simple, inexpensive, but limited to specific downstream conditions and not allowed under continuous pressure. • Pressure Vacuum Breakers (PVB) – suitable for irrigation and other moderate-hazard applications; must be installed above downstream piping. • Double Check Valve Assemblies (DCVA) – protect against non-health hazards; can be installed inline and in vaults. • Reduced Pressure Zone Assemblies (RPZ) – offer the highest protection against health hazards and back-pressure; required for many high-risk processes. Selection depends on hazard level, system pressure, installation location, and local code requirements. A licensed backflow specialist can evaluate your plumbing layout and determine the most appropriate device.
How often do backflow prevention assemblies need to be tested and certified?
Most municipalities require annual testing by a certified backflow tester, though some high-risk sites may require semi-annual or quarterly tests. The interval is specified by local code or the governing water authority. Test results must be documented and submitted to the municipality; failure to supply records can lead to fines or water service suspension.
What happens during a professional backflow device inspection and test?
A certified tester will: 1. Visually inspect the assembly for leaks, corrosion, or missing components. 2. Shut off downstream water to prevent disruption. 3. Connect calibrated test gauges to the device ports to measure check-valve and relief-valve performance under defined pressure conditions. 4. Record differential pressure readings to ensure they meet manufacturer and code specifications. 5. Clean internal parts or replace failing springs, seals, or check valves as needed. 6. Restore the system, re-pressurize, and verify normal operation. A signed test report is then issued to the property owner and the local water authority.
What are the risks of neglecting backflow prevention maintenance or testing?
Ignoring required testing or repairs can result in contaminated drinking water, creating public health hazards and significant liability for your business. Regulatory agencies can impose fines, shut off your water service, or revoke operating permits. Insurance policies may also exclude damage claims if mandatory backflow compliance is not documented. Regular maintenance protects building occupants, preserves your plumbing infrastructure, and keeps you in good standing with local health and safety regulations.