What is backflow and why is it a problem?

Backflow occurs when water flows in the reverse direction in a plumbing system, potentially allowing contaminated water from irrigation systems, fire sprinklers, or other sources to enter the public drinking water supply. This poses a serious public health risk, which is why most municipalities require annual backflow testing and certified prevention devices on commercial and residential properties.

Is Cregger certified to perform backflow testing?

Yes. Cregger holds ASSE Backflow Certification #36136, authorising our technicians to perform certified backflow testing, install backflow prevention devices, and provide the required compliance documentation to local water authorities.

How often does a backflow prevention device need to be tested?

Most Michigan municipalities require backflow prevention devices to be tested annually. Testing confirms the device is functioning correctly and preventing contamination of the public water supply. Cregger can schedule your annual test and handle all required reporting.

Who is required to have a backflow prevention device?

Backflow prevention devices are typically required on commercial properties, properties with irrigation systems, fire suppression systems, or any connection that could potentially contaminate the public water supply. Many residential properties with in-ground sprinkler systems are also required to have backflow preventers installed and tested annually.

Can Cregger install a new backflow prevention device?

Yes. In addition to testing existing devices, Cregger's ASSE-certified technicians can install new backflow prevention devices to bring your property into compliance. We handle all necessary permitting and provide compliance documentation upon completion.

Backflow Testing Michigan

Backflow Testing by Cregger Plumbing, Heating, Cooling & Electrical

Backflow prevention devices, also called backwater valves, exist to prevent water from flowing in the wrong direction. Water is intended to move from a distribution system into your building, ensuring that you are getting fresh, uncontaminated water. The main types of these devices include:

Sewer check valve
Automatic floodgate valve
Manual sewer gate valve

No matter what device you have fitted, if something goes wrong with your backflow system it can lead to contaminated water. At Cregger Plumbing, Heating, Cooling & Electrical, our plumbers in Michigan will test and repair all types of backflow prevention devices for customers in the Wayne, Macomb and Oakland Counties. Our trusted Michigan plumbers work with you to maintain your device and ensure that you have safe, drinkable water.

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Installation and Repair Services for All Property Types

Homes, offices and businesses, and industrial complexes require backflow devices in order to keep water safe, clean, and prevent sewage from contaminating potable water, leading to health concerns. In addition, Backflow can occur in more than just your pipes and indoor plumbing. We provide expert services to repair fire systems and will test and repair your lawn sprinkler systems, as well as keeping your devices in top working condition.
The Importance of Testing Backflow Prevention Devices

Although water distribution systems are designed for water to flow in one direction, situations can arise that cause water to flow back in the wrong direction. For most businesses, backflow prevention devices are required by the Environmental Protection Agency (EPA), in order to maintain a pure water supply. Typically, water suppliers and local counties require that your device is tested annually.
Schedule Your Backflow Testing Service Today

A Cregger Plumbing, Heating, Cooling & Electrical, we strive to establish strong relationships with our customers from Wayne, Macomb, and Oakland Counties by providing high-quality service and customer care.

We recommend regular maintenance for any customer who needs backflow testing as this allows us to keep track of when your device has been tested, the next date you are due for testing, and when your device requires repair or replacements. You can then have peace of mind that your device is in working condition and that your interests are being looked out for.

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What Our Customers Say

Jake was excellent service was really great. Will definitely use them again.

Chris O

February 25, 2026

Cregger Plumbing and Ethan Johnston provided exceptional service in every way to meet our needs today: they were prompt, attentive, courteous, respectful, knowledgeable. Ethan completed the necessary gas stove plumbing work, then provided helpful additional advice. We highly recommend Ethan and Cregger Plumbing – they deserve a 10 STAR rating!!! Thank You!

Debbie Amtower

February 25, 2026

I had a basement drain backup and called several “emergency” plumbers that told me they couldn’t make it out at all today, or it would have to be well after regular hours at a grossly inflated price. Dominick from Cregger really came through for us. He arrived promptly (in about an hour), was professional, knowledgeable and quickly solved the issue. I’m grateful I didn’t have to rearrange my schedule last minute to deal with this. Thank you!

Jet

February 24, 2026

He was an amazing technician, very knowledgeable. Came right over and fixed the problem fast and had me warming back up in no time. I’m definitely impressed and would recommend him to anyone needing their furnace repaired.

Tammie Pennington

February 24, 2026

We called in the morning with a shower issue and they had a plumber out before noon. We were shocked they could do the job the same day. Josh did a great job converting our leaking three-handle shower to a new single handler. He also replaced the old galvanized pipes with copper.

Jeannette Stecher

February 24, 2026

Dominick was friendly, knowledgeable, and solved our plumbing issues quickly. This is the second time we’ve used Cregger and, while I hope we won’t have any other plumbing issues soon, Cregger will be our first call if we do.

Matthew Kern

February 24, 2026

Great working with. Found line issue right away and method a cause to solve the line break. Could not have better explain problem. Will call again if any plumbing issues. Thanks

Patrick Hohner

February 22, 2026

David and Jacob were great. They were both thorough and kind. What was most appealing to is that they were on time! This company is certainly worth it!

February 21, 2026

Ethan was very efficient, took his time, analyzed the issues and fixed the leaks in atmely manner. Couldn’t be more pleased. Will definitely recommend Cragger to others

Steve Rudzinski

February 20, 2026

Jake helped me out and was extremely professional and knowledgeable. I would recommend him for any services. He has done multiple jobs for me and I can’t test enough good things.