Backflow Prevention & Testing in Naperville
Backflow occurs when contaminated water flows backward into your clean water supply — potentially introducing pesticides, fertilizers, sewage, or chemicals into the water your family drinks, cooks with, and bathes in. Backflow prevention devices stop this from happening, but they must be tested annually to ensure they're working correctly.
Plumbing Co. Naperville provides certified backflow testing, new device installation, repair, and replacement. Our testers are certified through the State of Illinois and submit test reports directly to the required authorities. It's part of our commitment as a trusted naperville plumbing company to homeowner compliance and water safety.
Backflow Services We Provide
- Annual Backflow Testing — Required by most Illinois municipalities when a backflow device is installed. We test Reduced Pressure Zone (RPZ), Double Check Valve (DCV), and Pressure Vacuum Breaker (PVB) assemblies with calibrated equipment and file the required paperwork.
- Backflow Device Installation — New installations for residential irrigation systems, fire sprinkler connections, swimming pools, and properties identified by the city as requiring protection. Naperville's Sanitary Sewer Backflow Device Reimbursement Program may reimburse up to $1,000 for qualifying installations.
- Backflow Device Repair — Failed check valves, relief valves, and seals repaired to restore proper function and pass annual testing.
- Sewer Backflow Valves — Installation of mainline backwater valves that prevent sewage from backing up into your basement through floor drains during storms — a common problem in Naperville during heavy rain events.
Annual Testing Due?
Don't risk fines or contamination. Quick, certified testing with same-week scheduling.
📞 Call (630) 822-9092Backflow Testing Cost in Naperville
| Service | Typical Cost |
|---|---|
| Annual Backflow Test (residential) | $75 – $150 |
| Backflow Device Repair | $150 – $400 |
| RPZ Device Installation | $800 – $1,500 |
| Sewer Backwater Valve Installation | $1,000 – $2,500 |
| PVB Installation (irrigation) | $300 – $600 |
*Remember: Naperville's reimbursement program may cover up to $1,000 for qualifying sewer backflow device installations.
Why Backflow Testing Matters in Naperville
Naperville receives its water from Lake Michigan via the DuPage Water Commission. Protecting this clean water supply from contamination is essential. Backflow events can occur during water main breaks, fire hydrant use, or sudden pressure drops in the municipal system. Without a working backflow preventer, contaminants from your irrigation system, sump pit, or sewer line could siphon into the public water supply.