What is a Backflow Test?

Backflow Testing confirms that a backflow prevention assembly still blocks non-potable water from entering potable lines. If you’re in Michigan, you’ll learn what a backflow test includes, who can perform it, what you’ll receive when it’s done, and how to schedule service with a trusted provider, so you stay compliant and protect drinking water.

What is a backflow test?

A backflow test is a certified check that verifies a backflow prevention assembly is installed correctly and operating within specification. In Michigan, assemblies are tested annually by certified testers (who are licensed plumbers). Results are documented and submitted to the appropriate authority to keep your property compliant.

Why Backflow Testing matters in Michigan

Backflow is the undesirable reversal of water flow. It can introduce non-potable, harmful substances into public or private systems and create serious health and safety risks. Annual Backflow Testing by industry experts is your best defense against contamination caused by assembly malfunction or wear.

What Backflow Testing includes

• Identification of each assembly (make, model, size, serial) and installation details
• Calibrated-gauge procedures following ASSE 5110 methods
• Differential pressure readings and a clear pass/fail result
• A signed test report for your records and certificate submission to the authority on your behalf

Who is qualified to perform the test

In Michigan, certified backflow testers are licensed plumbers, which means they can legally repair assemblies. Quality outcomes depend on hands-on expertise with many approved makes and models and on accurate testing and documentation.

What happens if an assembly fails

A failed result does not always mean replacement. The typical process is to diagnose the issue, provide a clear written quote, and schedule a return visit upon approval to complete repairs and retesting. Same-day repairs are uncommon because of the range of assemblies and parts in circulation.

Backflow prevention basics 

• A backflow prevention assembly allows water to flow in one direction only.
• Backsiphonage (pressure drop) and backpressure (pump or elevation effects) are the two main causes of backflow.
• Typical residential assemblies include PVB (for irrigation backsiphonage only) or RPZ where hazard, elevation, or backpressure risk warrants it.
• Some Michigan municipalities require an RPZ on water-driven sump pumps.
• Coordinate irrigation winterization and line work with your irrigation contractor; testing providers do not blow out lines.

What you receive after testing

• A complete test report with readings and outcomes
• Certificate filing with the appropriate authority
• Reminder scheduling so you don’t miss next year’s deadline

Why choose Backflow Prevention Services

• Backflow prevention servicing isn’t part of our business—it’s our entire business
• Certified testers and licensed plumbers familiar with all approved assemblies in Michigan
• Helpful office support, clear quotes, and authority submissions handled for you
• Statewide service across residential, commercial, heavy industrial, municipal, and military facilities
• 60+ years of combined experience across the team

How to prepare for a smooth visit

• Ensure safe access to each assembly and mechanical rooms
• Confirm water-off windows so occupants aren’t disrupted
• Have a site contact available to guide access, if needed

FAQs

How often is Backflow Testing required in Michigan?
Annual testing is standard across Michigan communities.

Who submits the certificate to my city or township?
Backflow Prevention Services provides the test report and submits certification to the appropriate authority on your behalf.

Can you repair my assembly if it fails?
Repairs are performed by licensed plumbers after you approve a written quote. A return visit is then scheduled for repairs and retesting.

Do you service both homes and commercial sites?

Yes, residential, commercial, heavy industrial, municipal, and military facilities throughout Michigan.

Do you design and install assemblies too?
Yes. We provide installation and system design, including coordination with inspectors and water departments.

Do you blow out irrigation lines?
No. Irrigation blowouts are handled by irrigation contractors.

Ready to stay compliant and protect your water supply with expert Backflow Testing? Schedule your annual backflow test with Backflow Prevention Services. Share your assembly count and locations, and we’ll coordinate testing and submit your certificate on time.

Understanding what a backflow test is and scheduling it annually keeps your drinking water safe and your paperwork current. With certified testing, licensed plumbing expertise, and statewide coordination, Backflow Prevention Services makes Backflow Testing straightforward from appointment to certificate.