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Backflow Testing in St. Paul

Protecting your home’s water supply is a critical responsibility. For homes in the Twin Cities with an RPZ (Reduced Pressure Zone) backflow device, Norblom Plumbing is a fully certified RPZ backflow testing company to count on to keep your potable water safe.

  • Licensed & Certified Backflow Testing Team
  • 100+ Years of Plumbing Experience
  • Seamless Backflow Test Scheduling

The Twin Cities’ RPZ Backflow Testing Professionals

Backflow occurs when a change in water pressure causes contaminated water to flow backward into your clean water lines, posing a significant health risk to your family and the community. Our licensed plumbers are specifically trained to inspect, test, and certify backflow prevention assemblies. 

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Annual RPZ Backflow Testing for St. Paul-Minneapolis Homes

In many Minnesota municipalities, annual testing of your RPZ backflow preventer is not just a recommendation; it’s a legal requirement. These devices are mechanical checkpoints that prevent fertilizers, soaps, or heavy metals from entering irrigation systems or boilers from siphoning back into the city’s water main. 

Norblom Plumbing is a certified RPZ backflow preventer tester in St. Paul. We’ll provide your annual certification after the inspection, making it easy to comply with local building codes. Not only is it a requirement, but annual testing of RPZ backflow preventers has many other purposes, such as: 

  • Because backflow preventers have many moving parts and seals, they can wear out or become clogged with mineral sediment over time. 
  • Regular testing also ensures that in the event of a sudden city-wide pressure drop, your home remains a closed, safe loop. 

The Norblom Plumbing Backflow Prevention Process

When you schedule your annual test with us, you aren’t just getting a pass/fail grade. Partner with Norblom Plumbing for all of the following components of comprehensive backflow testing: 

  • System Inspection
  • Pressure Differential Testing
  • Certified Reporting
  • On-the-Spot Repairs

Don’t wait for a notice from the city or a drop in water quality to schedule your annual backflow preventer testing! Ensure your home is protected by the plumbing experts who have served the Twin Cities for generations. 

Why Choose Norblom Plumbing for RPZ Backflow Testing?

Norblom Plumbing holds the specific certifications required by the State of Minnesota to perform legal backflow testing. Our experienced technicians understand the testing requirements for Minneapolis, St. Paul, and the surrounding areas, and will ensure your backflow is properly tested and certified. 

Here are a few answers to some frequently asked questions regarding RPZ backflow testing in the Twin Cities: 

Why Does The City Require Me To Test My RPZ Valve Every Single Year?

In Minnesota, the plumbing code mandates that all Reduced Pressure Zone (RPZ) assemblies be tested and certified annually, regardless of their age. These devices are complex and can develop mineral buildup from hard water, causing the backflow preventer to fail during a pressure change. 

To ensure all homes with backflow preventers are prepared for a pressure change, the state requires annual testing and certification. 

Can I Perform The Backflow Test Myself To Save Time?

No. The state requires that all backflow preventers be inspected by a licensed plumber who holds a specific ASSE certification. This ensures that the gauges used in testing are calibrated and that technicians have the specialized training to identify subtle mechanical failures.

What Happens If My Backflow Preventer Fails Its Annual Test?

A failed test means your device is no longer reliably protecting the public water supply from contamination. You must ensure that repairs, a rebuild, or a replacement are completed before scheduling another test. 

See What Our Clients Say About Our Work

5 star rating

I had the opportunity to work with the team at Norblom , They are a great group of guys who will get you taken care of.

Adam Payne

5 star rating

I chose Norblom Plumbing because they’re from St. Paul — my hometown — and that matters to me. There’s something about calling a local company that feels more personal, like you’re keeping things close to home. From the first phone call, I could tell I’d made the right choice. The person on the other end didn’t rush me. They listened. They were responsive, professional, and genuinely kind — not scripte...

Jon Martins

5 star rating

Norblom service was timely, professional, efficient. Great communication. Couldn't ask for more or better.

Jim Maurer

5 star rating

Mike made me a customer for life. I went to the company website to set up an appointment to flush out my water heater. It was a really easy process to set up the appointment. The company was able to fit me into the schedule the next business day. Mike went through all of the steps to flush out the water heater and explained along the way. He gave me some insight on my specific water heater unit and tol...

Andy

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