MaintenanceUpdated June 24, 2026
In Round Lake, commercial buildings rely on safe, uncontaminated water to serve customers and keep operations running. With Lake Michigan supplying municipal water, the risk of backflow, where used or unsafe water reverses into clean plumbing lines, is a real issue. State and local codes require regular backflow prevention testing, especially for businesses, schools, healthcare facilities, and restaurants, to protect the public water supply from chemical or biological hazards.
Why Businesses Need Backflow Prevention
Any commercial property connected to the public water system can face a backflow risk. This can happen when a sudden drop in pressure, like a water main break or nearby firefighting, causes water to flow backward. Without a properly working backflow preventer, substances from boilers, kitchen equipment, irrigation systems, or industrial processes can enter drinking water lines. Our team sees a range of assemblies in Round Lake, from double check valves to reduced pressure zone (RPZ) devices. Testing these annually isn't just paperwork, it's a key safety step.
Local Plumbing Code and Testing Schedules
Illinois requires annual testing of commercial backflow devices by a state-licensed plumber. Round Lake's modern business strip malls, offices, and schools (most built since the '90s) use assemblies sized for higher demand and varying water pressure. Testing involves isolating the device, checking for leaks or pressure loss, and verifying the internal valves and springs still respond properly. If a device fails, it must be repaired or replaced immediately.
Common Backflow Devices in Round Lake
- Double Check Valve Assembly (DCVA), Often used for fire sprinkler systems and internal process water lines.
- Reduced Pressure Zone (RPZ) Device, Standard for restaurants, labs, and properties with higher hazard risks. RPZs protect against both backpressure and backsiphonage.
- Pressure Vacuum Breaker (PVB), Found on many irrigation and landscape sprinkler systems.
Round Lake's heavy clay soil and flat terrain increase the odds of water pooling around exterior backflow devices, which makes regular checks for leaks and corrosion all the more important. We often see seasonal freeze-thaw damage to outdoor assemblies, and winterizing exposed equipment is critical.
Warning Signs Your Backflow Device Needs Attention
- Visible leaking or corrosion at the device housing or valve connections
- Unusual changes in water pressure inside your building
- Water discoloration or "off" taste in tap water
- Dripping or pooling water near exterior assemblies, especially after heavy storms or snowmelt
- Annual test overdue or documentation not up to date
If you notice any of these signs, you may also want to have your system checked for other hidden leaks. We offer leak detection and repair for commercial properties throughout Lake County.
How We Perform Backflow Testing
Our licensed technicians start by shutting off downstream valves to isolate the device. Specialized test gauges measure pressure at different points to make sure internal check valves close tightly and springs operate as designed. We look for mineral buildup, stuck parts, or worn gaskets, issues that can develop over time with moderately hard municipal water. If repairs or cleaning are needed, we have the experience and the right replacement parts for quick turnarounds. Once the assembly passes, we document results per Illinois code and file them as required.
Prevention, Maintenance, and Related Services
Routine inspection can catch minor issues before they pose a safety risk or disrupt business. For properties with irrigation systems, seasonal checks of both the backflow device and sprinkler controls are smart, especially before spring startup. Businesses in Round Lake's newer commercial areas may need guidance on where to locate backflow assemblies to avoid flooding from poor drainage. We also help with related services: if you suspect clogs or slow drains from buildup in supply lines, check out our drain cleaning options. For repairs to water supply piping itself, see our pipe repair and repiping page.
If you ever face an emergency contaminated water situation or a failed device, fast cleanup and repairs are critical. See our emergency plumbing service for fast, professional help any time. For businesses with sump pits or below-grade mechanical rooms, our sump pump services can provide protection against water damage from flooding or high water tables.
If you manage a Round Lake business, school, or facility and need backflow testing or repairs, give us a call at 224-308-1299. Our crew handles scheduling, documentation, and the technical testing work to keep your property safe and up to code.