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Commercial Backflow Preventer: Installation & Services

Protecting your commercial property’s water supply isn’t just good business- it’s the law. Backflow occurs when contaminated water flows in reverse and enters clean water lines, putting your employees, customers, and community at risk. To keep your building compliant and safe, Roto-Rooter provides complete commercial backflow preventer installation, testing, inspection, and replacement services.

For more than 90 years, businesses nationwide have trusted Roto-Rooter to safeguard their plumbing systems with reliable backflow prevention solutions. Whether you operate a restaurant, healthcare facility, retail center, or industrial property, our licensed and backflow-certified plumbers ensure your system meets local codes and industry standards.

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The Roto-Rooter Difference in Backflow Prevention Services

When it comes to protecting your water supply, you need a partner with proven expertise. Here’s why businesses choose Roto-Rooter for backflow prevention:

  • Certified & Licensed Plumbers – All technicians are trained to meet state and local backflow prevention requirements.
  • Nationwide Reach, Local Knowledge – Our teams understand regional codes and regulations that apply to your property type.
  • Comprehensive Solutions – From installation to annual testing and emergency replacement, we handle it all.
  • Industry Partnerships – We work with trusted manufacturers to install durable, code-compliant commercial backflow preventers.

Trusted for 90+ Years –...

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Commercial Backflow Testing Process

Annual backflow testing is required by most municipalities to ensure your backflow prevention device is functioning properly. At Roto-Rooter, our process is fast, thorough, and minimally disruptive to your operations:

  1. Inspection & Setup – Our backflow-certified technician identifies the location and type of backflow preventer(s) on your property.
  2. Pressure Testing – We use calibrated gauges to verify that the valves are operating correctly and preventing reverse water flow.
  3. Compliance Documentation – Upon completion, we provide all necessary paperwork for your records and submit results to local authorities as required.
  4. Repair or Replacement – If your system fails testing, our team provides immediate repair options or installs a new backflow preventer to restore compliance.

With Roto-Rooter, you’ll never miss a required backflow inspection deadline or risk penalties for non-compliance.

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Backflow Prevention Services

Roto-Rooter offers a complete range of commercial backflow services designed to keep your business compliant and operational:

  • Commercial Backflow Preventer Installation – Professional installation of new devices for new construction or retrofits.
  • Commercial Backflow Testing – Annual testing to meet local regulations and ensure device performance.
  • Commercial Backflow Inspection – Routine inspections to identify early issues before failures occur.
  • Commercial Backflow Replacement – Removal and replacement of outdated or non-compliant devices.
  • Emergency Repairs – Rapid response when a backflow preventer fails or causes water supply concerns.

Related commercial services: Grease Trap Services, Commercial Plumbing Repairs, and Water Line Services.

Signs You Need a Backflow Preventer Replacement

Backflow preventers don’t last forever. Common warning signs that it’s time to replace your commercial backflow device include:

  • Frequent testing failures or recurring leaks
  • Visible rust, cracks, or worn components
  • Reduced water pressure across your system
  • Devices older than 10–15 years (depending on type and usage)
  • Changes in local codes requiring upgraded equipment
  • Your backflow device was frozen and probably sustained damage

Ignoring these signs risks both compliance fines and public health concerns. Roto-Rooter can help you upgrade to a reliable, code-approved commercial backflow preventer that protects your business and community.

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Customer Reviews

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I would highly recommend Roto-Rooter. I called them on Tuesday afternoon and was scheduled for service the next day which was a Holiday between 12-3pm. My technician he arrived earlier than expected. He assessed the backflow issue and it was resolved within a hour and a half. He was very friendly and knowledgeable. He is an asset to your company. I will definitely use your company again. Alexa H
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The person that came out and worked on my backflow issue was excellent. I just felt bad that it was so hot. He was very professional and explained what he was doing and how long he thought he would take. I was very happy with my experience. Humberto R
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This was the first time I needed your service for our backflow issue and the tech was here promptly and was very good at his job he had us cleared within 45 minutes. He also seemed to love his job. So thank you for a job well done. Harrison T

Frequently Asked Questions

Where is a backflow preventer required?

Backflow preventers are required in various commercial and industrial settings where there is a risk of contamination to the potable water supply. This includes restaurants, healthcare facilities, and any location where the water supply could be compromised by backflow. Local codes and regulations typically dictate where backflow preventers must be installed to ensure compliance and safety.

How to test a backflow preventer?

Testing a backflow preventer involves using calibrated gauges to measure the pressure and ensure the valves are functioning correctly. A certified technician will inspect the device, perform pressure tests, and verify that the backflow preventer is effectively preventing reverse water flow.

How to drain a backflow preventer?

To drain a backflow preventer, you need to shut off the water supply and open the test cocks to release any trapped water. This process may vary depending on the type of backflow preventer, so it's essential to follow the manufacturer's instructions or consult a professional.

How does a backflow preventer work?

A backflow preventer works by using a series of check valves and pressure zones to ensure that water flows in the correct direction. When the pressure in the clean water line drops, the valves close to prevent contaminated water from flowing back into the clean water supply.

What is a backflow preventer?

A backflow preventer is a device installed in plumbing systems to prevent contaminated water from flowing backward into the clean water supply. It ensures that water only flows in one direction, protecting the potable water from contamination due to backflow.