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Commercial Backflow Testing

If your annual compliance notice just came due, or your water authority flagged your property, Roto-Rooter provides the backflow testing service you need.

Backflow testing is the recurring functional check on a backflow preventer that's already installed: it confirms the device is still holding pressure and blocking reverse flow correctly. This is a compliance service on an existing device, not an installation or a repair.

Roto-Rooter provides 24/7, 365 days a year support: available today for your backflow testing needs.

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What Happens During a Backflow Test?

  • Locating and identifying the installed device and its type
  • Applying calibrated test equipment to check that each internal check valve holds and releases pressure correctly
  • Confirming the device blocks reverse flow under a pressure change
  • Documenting the results and submitting them to the local water authority, where that's required

Who Is Required to Test Their Backflow Preventer?

Most commercial properties with a backflow preventer are required to have it tested on a recurring basis by their local water authority. This applies broadly to restaurants, healthcare facilities, food service operations, car washes, irrigation systems, and any connection where a water authority has determined there's a contamination risk. The exact schedule and reporting requirements vary by state, city, and utility, so confirm the specifics for your property with your local water authority or a Roto-Rooter technician.

Common Connections That Require Testing

  • Irrigation systems, one of the most common testable connections on commercial and multi-family properties
  • Fire suppression and sprinkler lines
  • Commercial kitchen equipment at restaurants and food service properties
  • Medical and lab equipment at healthcare facilities
  • Boiler and cooling systems
  • Car wash and vehicle service equipment
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What to Have Ready Before Your Testing Appointment

A faster appointment usually comes down to two things: access and paperwork. Make sure someone on-site can direct the technician to the device (mechanical room, roof, or exterior riser) and can shut off the relevant line if needed.

If your property has been tested before, having the prior test report on hand helps the technician confirm the device type and its testing history before starting.

What If My Backflow Preventer Fails Testing?

A device that fails testing needs repair or replacement before it's compliant again. Roto-Rooter can diagnose the failure on-site and recommend the right next step, whether that's a repair or a full replacement.

Not sure which device your property even has? See our guide to commercial backflow preventer types.

Ready to schedule a test? Book Backflow Testing today!

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Backflow Testing - Customer Reviews

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I used Roto-Rooter for the annual Backflow Preventer Test as required by Charlotte Water. The service technician, Gavin, arrived promptly at the scheduled time, was very professional and the test was completed without any problem. I will probably use them again next year. Phil M
01234
We've had our yearly RPZ back flow test for twice with Roto-Rooter. Their service is good and the technician Pat is very helpful. North Aurora Hotel
01234
Roto-Rooter performed our annual backflow prevention test and did an excellent job! We were able to easily make an appointment and meet the deadline for our annual testing with no problems. Gavin was very professional and worked quickly to complete the test. We will certainly be using Roto-Rooter for our testing each year! Brittany W

Frequently Asked Questions

How is a backflow preventer tested?

A certified technician uses calibrated test equipment to check that each check valve in the device holds pressure and blocks reverse flow, then records the results.

How often does testing need to happen?

Requirements vary by jurisdiction and by your local water authority. Confirm the exact schedule for your property with your water utility or your Roto-Rooter technician.

Does backflow testing require a permit or inspection sign-off?

In many jurisdictions the results have to be submitted to the local water authority. Requirements vary by location, and your technician can confirm what applies where you're located.

What happens if my device fails the test?

A failed device needs repair or replacement before it's compliant. A technician can assess the failure and recommend the right fix.

Do I need to be on-site for the test?

A facilities contact who can grant access to the device's location is typically all that's needed; check with your Roto-Rooter technician when scheduling.