FAQ
Is Backflow Testing Required by Law in New Jersey, and What Happens If I Don't Comply?
If someone has told you that backflow testing is required annually in New Jersey — by your water utility, a plumber, or a compliance notice — you may be wondering whether this is truly a legal requirement or just a recommendation. The answer is unambiguous: annual backflow preventer testing is required by New Jersey state law and enforced by water utilities and municipalities throughout the state. This article explains the full legal framework, who it applies to, what the testing obligation entails, and exactly what consequences await those who don’t comply.
For the broader context on why these regulations exist and what backflow prevention actually does, see our guide on why New Jersey property owners need a backflow preventer.
The Two Types of Cross-Connection Hazards
A high-hazard cross-connection involves a potential source of contamination that could cause illness, injury, or death if it entered the drinking water supply. Examples include irrigation systems that use fertilizers or pesticides, commercial chemical injection systems, medical and laboratory equipment, industrial process piping, car wash equipment, and any system involving sewage or human waste. High-hazard cross-connections require the most stringent protection devices — typically a Reduced Pressure Zone (RPZ) assembly — under New Jersey regulations.
The Legal Foundation: N.J.A.C. 7:14B
New Jersey’s backflow prevention requirements are codified in the New Jersey Administrative Code at N.J.A.C. 7:14B — the Rules for Safe Drinking Water. This regulation, administered by the New Jersey Department of Environmental Protection (NJDEP), establishes the framework for cross-connection control throughout the state. Key provisions of N.J.A.C. 7:14B require:
All public water systems (utilities) in New Jersey to maintain an active cross-connection control program
All public water systems to require customers with cross-connections to install appropriate backflow prevention devices
All testable backflow prevention devices connected to a public water supply to be tested at minimum annually by a state-licensed tester
Test results to be submitted to the water utility and maintained in compliance records
Water utilities to enforce compliance and discontinue service to non-compliant customers
This is state law — not a recommendation, not a utility policy preference, and not something your particular municipality can opt out of. Every water utility operating in New Jersey is legally required to enforce these standards.
Who Is Covered by New Jersey's Backflow Testing Requirement?
The annual testing requirement applies to any property owner, tenant, or operator who has a testable backflow prevention device installed on a potable water supply connection. If your property has any of the following and is connected to a public water supply, you are almost certainly covered:
An in-ground irrigation or lawn sprinkler system
A swimming pool, hot tub, or decorative fountain with a potable water makeup connection
A fire sprinkler or fire suppression system
Commercial or industrial process equipment connected to potable water
Medical, dental, or laboratory water systems
Restaurant, food service, or commercial kitchen equipment
Any other cross-connection as identified by your water utility
If you’re not sure whether your property has a device subject to this requirement, our guide to how to tell if your home or business has a backflow device will help you identify any existing backflow prevention equipment.
Which Water Utilities Enforce Backflow Testing in New Jersey?
Every public water utility in New Jersey is legally required to maintain a cross-connection control program under N.J.A.C. 7:14B. This includes:
New Jersey American Water: The largest water utility in the state, serving approximately 2.8 million customers across multiple counties. NJ American Water operates one of the most active cross-connection control programs in the state.
Local Municipal Utility Authorities (MUAs): Dozens of independently operated local water utilities throughout New Jersey, including Trenton Water Works, Gloucester County MUA, Burlington City MUA, and many others.
Municipal water departments: Some municipalities operate their water systems directly through a public works or engineering department rather than an MUA.
Private community water systems: Apartment complexes, condominium associations, and other private water systems that serve multiple properties also have cross-connection control obligations.
What Happens If You Don't Test Your Backflow Preventer?
Stage 1: Notice of Non-Compliance
When your water utility has no record of a current backflow test for your property, they will send a written compliance notice. This notice specifies the required action (schedule a test with a licensed tester and submit the results) and a deadline, typically 30 to 60 days from the date of the letter.
Stage 2: Follow-Up Notice and Escalation
If no test report is received by the deadline, a follow-up notice is issued — often with a shorter response window and a more urgent tone. Some utilities also charge an administrative fee at this stage.
Stage 3: Formal Notice of Violation
Continued non-compliance results in a formal Notice of Violation (NOV). An NOV is a legal document establishing that you are in violation of state law. Fines associated with NOVs vary by utility and municipality but can range from $100 to $1,000 or more per violation period, with continuing daily penalties in some jurisdictions.
Stage 4: Water Service Disconnection
New Jersey water utilities have the legal authority to disconnect water service to non-compliant properties. This is the most severe enforcement action in a utility’s toolbox, and it is used — particularly for commercial properties with persistent non-compliance. A water service disconnection means exactly what it sounds like: no water to your property until you achieve compliance and pay any required fees for reconnection.
Stage 5: Civil Liability
In the event of a backflow contamination event involving your property, your failure to maintain annual compliance dramatically increases your civil liability exposure. Affected neighbors, your water utility, and the municipality may all have legal claims against a property owner whose non-compliant device contributed to a contamination event.
How to Achieve and Maintain Compliance
Compliance is simple when you work with a certified backflow prevention specialist. Schedule your annual test, allow the technician to test and (if necessary) repair the device, and ensure the test report is filed with your water authority. South Jersey Backflow handles all of this — from scheduling to testing to paperwork filing — for properties throughout all of New Jersey. If you’ve already received a compliance notice, our guide to what to do if you received a backflow compliance letter explains the step-by-step resolution process.
Annual testing costs $150 to $250 for most residential devices — a fraction of any fine, and nothing compared to the liability and disruption of a water service disconnection. See our backflow preventer installation, testing, and rebuilding costs guide for current pricing, and contact South Jersey Backflow to schedule your service today.
Schedule Your Backflow Service Anywhere in New Jersey
South Jersey Backflow has proudly served residential and commercial customers across all of New Jersey since 2004. Our certified technicians provide annual backflow testing and certification, expert repairs and rebuilds, and protective backflow enclosures — all with transparent pricing, complete paperwork handling, and 24/7 emergency availability. Call (856) 291-6809 or contact us online to get started today.