Backflow Prevention

Dependable Service Since 1926

Call (303) 731-5469

Backflow Testing & Prevention in Denver, CO

Certified Backflow Testers in Denver – One of the Few Companies Fully Compliant with New Regulations

Ensuring the safety and purity of your home’s water is paramount. At Bell Plumbing, Heating, Cooling & Electrical, we offer comprehensive backflow testing and prevention services in Denver to safeguard your drinking water from contamination.

Our certified Denver plumbing technicians are among the few in the Denver area who meet the latest requirements to legally perform backflow testing — giving you peace of mind that your system is in qualified hands.

Whether you’re due for your annual backflow test, need a new prevention device installed, or just want to ensure your home is protected, we’re here to help with fast, reliable, and fully compliant service. Schedule your backflow testing in Denver today!

Call (303) 731-5469

4.7 Stars | 4,000+ Reviews

Alan Lipkin 6 days ago

Very professional, excellent work.

...

Jeff 6 days ago

Michael did a great job for us. He cleaned our furnace blower wheel and replaced some exhaust venting. The work was done professionally and efficiently. He was also courteous and answered all my questions. I highly recommend him.

...

Ralph Winn 1 week ago

Kwincii Stewart was dispatched to my house to service my water heater on 1/7/2026. He did and outstanding job and explained not only the work to be done, but also the function of the various pieces of equipment attached to the water heater. He was very knowledgeable. I am very happy with his work.

...

Chelsea Simcox 1 week ago

Furnace stopped working on New Years and Mike from Bell was out to us within the hour. The woman at Bell who took my initial call was incredibly kind and worked quickly to find a tech to help.

Mike took time to explain the issue and was able to fix the problem in a short amount of time. He was extremely knowledgeable, kind and went above and beyond to ensure I was satisfied with the service. He also followed up timely with some questions I had. I would highly recommend Bell and Mike specifically.

...

Eddie Portoghese 1 week ago

Bell plumbing is an honest company with excellent customer service and thoughtful technicians. Jordan, a drain expert, was here recently to fix our problem and he was professional and courtesy. He quickly fixed the clog and explained the issue thoroughly.
We trust Bell with all our plumbing and electrical needs.

...

What Is Backflow and Why Is It a Risk to Your Home?

Backflow occurs when water flows in the opposite direction within your plumbing system, potentially allowing contaminants to enter your clean water supply. This can happen due to changes in pressure, such as during a water main break or heavy water usage in the area. Contaminated water poses serious health risks, making backflow prevention essential

What Is Backflow Testing and Why Do You Need It?

Backflow testing involves inspecting your backflow prevention device to ensure it’s functioning correctly. Regular testing is crucial to maintain compliance with local regulations and to protect your household from potential water contamination. In Denver, annual backflow testing is often required, especially for homes with irrigation systems or other cross-connections.

Backflow Prevention Devices We Service and Install

We specialize in servicing and installing various types of backflow prevention devices, including:

Reduced Pressure Zone (RPZ) Assemblies
Double Check Valve Assemblies (DCVA)
Pressure Vacuum Breakers (PVB)

Our team ensures that all devices meet Denver Water’s standards and are installed correctly to provide maximum protection.

Signs You Might Have A Backflow Problem In Denver

Did you know that backflow testing statistics reveal that between 4% and 15% of devices fail the initial backflow test, primarily due to mechanical issues, wear, or environmental factors?

Be alert to the following indicators of a Denver backflow issue:

Discolored or cloudy water
Unusual odors or tastes in your water
Visible sediment or debris
Unexpected changes in water pressure

If you notice any of these signs, contact our Denver backflow professionals to assess and address the problem.

$50 Off

$50 Off Any Plumbing, Heating, Cooling or Electrical Service

Expires 01/31/26.

Call (303) 731-5469

Why Denver Homeowners Trust Bell for Backflow Testing & Prevention

Choosing the right company for backflow services is crucial. Here’s why Bell stands out:

Certified for Backflow Testing in Colorado: We’re one of the few local companies certified to perform backflow testing. Denver regulations now require this certification — and we’re fully compliant.
Established Expertise: Serving the Denver area since 1926, we’ve built a legacy of trust and quality.
Certified Professionals: Our technicians are licensed, bonded, and insured, ensuring top-notch service.
Transparent Pricing: We offer flat-rate pricing and provide clear explanations before any work begins.
Respectful Service: Our team treats your home with care, using protective coverings and maintaining a clean workspace.
Reputable Standing: We maintain an A+ rating with the Better Business Bureau, reflecting our commitment to customer satisfaction.

DIY Tips to Help Prevent Backflow in Your Home

While certified backflow devices and testing are required for full protection, here are a few simple things Denver homeowners can do to minimize risk:

Don’t Submerge Garden Hoses in Water

Never leave a hose in a pool, hot tub, or bucket — especially when the water is running. If pressure drops, that water can siphon backward into your plumbing.

Install Hose Bibb Vacuum Breakers

These affordable attachments go on outdoor spigots and prevent water from flowing back into your home’s plumbing. They’re a smart upgrade for any outdoor hose connection.

Avoid Cross-Connections

Be cautious when connecting different water systems (like irrigation or decorative fountains). These can create pathways for contaminated water to enter your clean supply.

Know Where Your Shut-Off Valves Are

In the event of an emergency, being able to quickly stop water flow can prevent backflow issues — especially if pipes burst or pressure changes.

Schedule Annual Professional Backflow Testing

The best prevention is early detection. Annual testing ensures your system is working and in compliance with local regulations.

Reminder: While you can take preventive steps, only certified professionals are authorized to test, repair, or install backflow prevention assemblies in Colorado.

Backflow Prevention FAQs

How often is backflow testing required in Denver?

Denver Water mandates annual testing for backflow prevention devices to ensure the safety of the public water supply.

What happens during a backflow test?

A certified technician will assess your backflow prevention device, checking for proper operation and identifying any issues that need repair.

What if my backflow device fails the test?

If your device fails, our team will recommend necessary repairs or replacements to bring it into compliance and protect your water supply.

How long does the testing process take?

Most backflow tests can be completed within an hour, depending on the complexity of your system.

How much does backflow testing cost?

Bell offers competitive, flat-rate pricing for our backflow testing services in Denver. Contact us for a detailed quote tailored to your specific needs.

Call (303) 731-5469

New Denver Regulation: Backflow Testing Must Be Done by Certified Professionals

Plumbers must now be specially certified to perform backflow testing in the Denver metro area. Bell is one of the few companies in the region with certified technicians on staff.

Protect your water supply and stay compliant — schedule your Denver backflow test with Bell today!

Schedule Reliable Backflow Testing in Denver with Bell Today

Don’t compromise on the safety of your home’s water supply. Trust the experienced professionals at Bell Plumbing, Heating, Cooling & Electrical for thorough backflow testing and prevention services.