MaintenanceUpdated July 8, 2026
Every commercial property in Downers Grove connected to the municipal water supply needs a working backflow prevention system. Local water is sourced from Lake Michigan and distributed under pressure. Any drop in pressure, like during a water main break or major fire event, means there's a risk that contaminated water could be sucked back into clean supply lines. That's why local and state codes require backflow prevention assemblies and regular testing, especially for businesses that pose a higher risk of cross-connections, such as restaurants, medical clinics, and buildings with irrigation systems.
Why Backflow Testing Matters for Businesses
Backflow isn't just a compliance issue. If your backflow prevention device fails, there's a chance contaminants, from fertilizers and cleaning chemicals to bacteria, could get into the drinking water. Businesses in Downers Grove have to stay vigilant, not just to keep up with regulations, but to protect employees, customers, and their own reputation. Annual testing isn't optional for most commercial properties. It's enforced by local municipal codes and the Illinois EPA.
Common Backflow Devices in Downers Grove
You'll find a few types of backflow prevention assemblies used locally. The most common are:
- Reduced Pressure Zone (RPZ) assemblies, typically required for high-risk applications like medical offices and commercial kitchens
- Double Check Valve Assemblies (DCVA), used for lower risk, such as fire protection lines or standard irrigation systems
- Pressure Vacuum Breakers (PVB), often used on outdoor irrigation setups
Each type needs periodic inspection and testing to catch passing check valves, leaking relief valves, or sediment buildup that can prevent proper function.
How Our Team Handles Backflow Testing
Our licensed plumbers are trained and certified to test and maintain all major backflow assemblies found in the Chicago suburbs. We use calibrated gauges and follow state-mandated test procedures. Here's what a typical visit involves:
- Documenting make, model, and serial number of the assembly
- Shutting down water supply to isolate the device
- Testing each check valve and relief valve for leaks and pressure loss
- Cleaning any removable parts if buildup or debris is found
- Completing required paperwork for local code compliance
If a device fails, we'll recommend the right repair or replacement, sometimes debris or worn rubber parts are the culprit. Sometimes, a full valve replacement is needed, especially in cases where older parts are discontinued. Our commercial plumbing services cover both scheduled testing and any necessary repairs.
Warning Signs Your Backflow Prevention Device Needs Attention
- Visible leaks or pooling water around the device
- Strange tastes, odors, or discoloration in water
- Unusual drop in water pressure inside the building
- Failure to pass annual inspection/test
Ignoring these issues can result in code violations or even business closures if the water supply gets shut off. Our team can perform leak detection and repair if you notice any water loss around your backflow assembly.
Staying Compliant with Downers Grove Water Regulations
The village requires annual test reports, submitted by a licensed plumber, for all commercial backflow assemblies connected to the municipal water supply. If your business is in an older building closer to downtown, you might also be dealing with original piping made of galvanized steel or cast iron, which is more prone to corrosion and leaks. Regular plumbing maintenance, including pipe repair and repiping and drain cleaning, helps avoid surprises during inspections.
Besides, with Downers Grove's humid summers and freeze-thaw cycles in winter, assemblies sitting close to exterior walls or unheated spaces can be at bigger risk for freeze damage. A proper maintenance schedule and winterization steps can extend the lifespan of your backflow equipment.
Best Practices for Backflow and Plumbing Maintenance
- Schedule annual backflow tests before your compliance deadline
- Keep access to assemblies clear for inspectors and repairs
- Address leaks, drips, or pressure problems as soon as they appear
- Maintain proper insulation where assemblies are exposed to cold
- Partner with a local plumber familiar with Downers Grove codes and conditions
We work with all types of commercial properties, from offices near Main Street to larger facilities off the tollways. Our crew also handles related plumbing needs, such as commercial water heater services and sump pump maintenance for properties with basements and equipment rooms.
If your Downers Grove business needs an annual backflow test or a repair to stay compliant and protect your water supply, call our team at 331-260-0956. We're ready to help keep your plumbing safe and up to code.