Backflow Testing in New Jersey
How to Pass, Submit, and Stay Compliant
Annual testing isn’t optional in New Jersey—it’s the law. This guide walks you through exactly what to expect, how to pass, and how to stay on top of local and state requirements.
Every backflow preventer connected to a public water system in New Jersey must be tested by a certified professional, at least once a year. Whether you’re a homeowner receiving your first compliance notice or a property manager responsible for multiple systems, this section of the South Jersey Backflow Library answers every question about testing, reporting, retesting, and staying compliant with NJDEP and township regulations.
Explore Testing & Certification Topics (20 Detailed Guides)
Frequency & Compliance Rules
Testing Requirements in New Jersey
In New Jersey, backflow testing is regulated by both the New Jersey Department of Environmental Protection (NJDEP) and local township ordinances. While the state mandates annual testing for all testable devices (RPZs, DCVAs, and PVBs), many towns have their own:
Required test forms
Due dates (usually 12 months from the last passing test)
Approved device lists
Online portals or physical mail-in requirements
South Jersey Backflow stays up to date on every township’s submission process, so you don’t have to.
Who Needs to Be Tested?
This guide is for:
Homeowners with irrigation systems or pool fills
Commercial property owners with fire, HVAC, or domestic water backflow devices
Property managers managing multi-unit or multi-site systems
Contractors and plumbers navigating NJ certification processes
Anyone who received a letter from their township or water provider
Why You Can’t Skip Your Annual Test
Backflow devices are safety systems. Without testing, there’s no way to confirm they’re working—and that puts the public water supply at risk.
Consequences of skipping testing can include:
Fines from your township
Notices of violation
Forced water shutoffs
Insurance complications
Health department issues (for food service or healthcare facilities)
Even if your system appears to be working, you may still fail a test due to internal wear or unnoticed valve failure.
Statewide Testing Services in All 21 NJ Counties
South Jersey Backflow performs certified backflow testing across every region of the state:
North Jersey: Bergen, Essex, Passaic, Hudson
Central Jersey: Middlesex, Mercer, Somerset, Monmouth
South Jersey: Burlington, Camden, Atlantic, Gloucester, Cape May
We handle testing, rebuilds, reporting, retesting, and township submission from start to finish.
Schedule a Test or Request Help With Certification
Need your annual test? Failed and need to retest? Not sure what your township requires? We can help with everything—from testing to reporting.
📞 Call South Jersey Backflow: (856) 437-5471
📧 Email: southjerseybackflow@gmail.com
🌐 Request a test or submit your form online →