Recieved A Backflow Violation?
Need Annual Testing?
We Can Help!
With more than 10 years of experience in NYC backflow compliance you can rely on us as your certified backflow tester and installer.
Our Advantages
Quick Response
A certified backflow pro will visit your location within 24 hours to ensure compliance.
Professional Service
Our technicians are fully accredited and experienced.
On Time Filing
We'll get your backflow devices filed in a timely matter, so you can focus on what matters most.
About Us
Mainstream Backflow is a team of certified backflow testers and installers that have been serving the 5 boroughs of NYC for over a decade.
Get Your Quote Today!
