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24/7 Emergency Service Available | Licensed for Backflow Testing ♦
24/7 Emergency Service Available | Licensed for Backflow Testing ♦

Backflow Prevention Device

Certified Backflow Testing You Can Rely On
Mainline Plumbing & Sewer Inc. offers state certified backflow testing service. We make it easy for you, handling all paperwork and processing for your convenience at no additional charge. We file all forms with the local water providing authority in accordance with state law, a copy is maintained at our office for future reference if ever needed. We also offer a free annual reminder service, giving you a heads-up when it comes time to have your backflow assembly tested again.
State of Michigan Department of Public Health, Administrative Rules for Michigan's Safe Drinking Water Act, Act 399, P.A. 1976 Michigan Plumbing Code 2009, and local Cross Connection Control (CCC) plan requirements.
Read their specifications here.
We know and follow all ordinances and state regulations.
Backflow Prevention
Services We Perform Include:
  • Visual Inspection of backflow unit by state-certified inspectors
  • Double-check valve assembly
  • Double detector check valve assembly
  • Pressure vacuum breaker
  • Reduced pressure backflow preventer assembly
  • Reduced pressure detector assembly
  • Spill resistant vacuum breaker
  • Complete and file all documents, per local government code
  • Replacement parts are available if needed
Backflow assemblies must be inspected by a government-approved tester when installed, reinstalled, relocated or repaired and every year thereafter. We handle all paperwork, inspections and repairs, if needed, to get your certification registered with the local governing body, for one low price.
We provide full-spectrum plumbing services in addition to backflow devices for residential and commercial properties. We have at least one plumber on-call at all times, 24 hours a day 7 days a week, with a 1-hour or less typical response time.

Call Us Today At ♦ 866-323-3950

YP Reviews

We are state certified and licensed to test, repair and install backflow preventers. We use Midwest testing equipment for backflow testing.
Rely on our team to give you great service every time. We have provided quality service since 1989.
Call us to schedule, we do offer next day service! (866) 323-3950
Plumbing Services