What to Do If Your Utility Requires a Backflow Preventer Installation

Opening your mail to find a notice from your water utility demanding a backflow preventer installation can feel overwhelming — especially if you've never dealt with cross-connection control before. The good news is that this is a routine requirement for thousands of property owners each year, and the process is more straightforward than it looks. This guide walks you through every step, from understanding why you received the notice to getting your device installed, tested, and on record with your utility.

A certified plumber installing a backflow preventer assembly on a commercial building's main water service line, with copper pipes and a red-handled shutoff valve visible

Why Did You Receive This Notice?

Water utilities are required by federal and state regulations to protect the public drinking water supply from contamination. One of the primary ways contamination enters the system is through backflow — the reversal of water flow that can pull pollutants, chemicals, or bacteria from your property back into the municipal supply.

Your utility may have issued this requirement for several reasons:

• A new cross-connection survey identified your property as a potential contamination risk based on its water use (irrigation systems, fire suppression systems, boilers, or commercial processes are common triggers).
• A change in local ordinance expanded which property types must have backflow protection.
• A building permit or meter upgrade triggered a review of your cross-connection controls.
• An inspection finding identified an unprotected connection on your property.

Whatever the reason, the requirement is legitimate and legally binding. Ignoring it can result in your water service being shut off, so prompt action protects both your property and your neighbors' drinking water.

Step 1: Read the Notice Carefully

Before you do anything else, read the full notice your utility sent. Look for these key pieces of information:

• Compliance deadline — Most utilities give 30 to 90 days. Note this date and work backward from it when scheduling.
• Required assembly type — The notice may specify whether you need a Reduced Pressure Zone (RPZ) assembly, a Double Check Valve Assembly (DCVA), a Pressure Vacuum Breaker (PVB), or another device. If it doesn't specify, your licensed installer will determine the correct type based on your hazard level.
• Approved installer requirements — Many utilities require installation by a licensed plumber who holds a cross-connection control certification. Some require the work to be permitted.
• Testing requirements — Nearly every utility requires the device to be tested immediately after installation and annually thereafter.
• Who to submit reports to — Find out whether test reports go directly to the utility or to a third-party backflow program administrator.

If anything is unclear, call your utility's cross-connection control department directly. They can clarify requirements and sometimes recommend certified local testers.

Step 2: Understand What Type of Assembly You Need

The type of backflow preventer required depends on your property's specific hazard level — essentially, how dangerous a backflow event could be if it occurred.

Reduced Pressure Zone (RPZ) Assembly — Required for high-hazard connections such as irrigation systems with chemical injection, boilers, fire suppression systems with additives, or commercial/industrial processes. RPZ assemblies are the most protective option and are typically required for anything connected to a potential source of contamination.

Double Check Valve Assembly (DCVA) — Common for low-to-moderate hazard applications like fire sprinkler systems without chemical additives or commercial buildings with standard plumbing.

Pressure Vacuum Breaker (PVB) or Atmospheric Vacuum Breaker (AVB) — Used for simple irrigation systems in residential or light commercial settings where the device will always be under continuous pressure or used intermittently.

A licensed cross-connection control specialist can perform a site survey to confirm exactly what's required. Don't try to determine this yourself — choosing the wrong assembly can result in a failed inspection and having to redo the work.

Step 3: Hire a Licensed, Certified Installer

This is not a DIY project. Backflow preventer installation typically requires:

• A state-licensed plumber (requirements vary by state)
• A cross-connection control certification from the American Backflow Prevention Association (ABPA), American Water Works Association (AWWA), or a state-approved program
• Permits pulled from your local building department in most jurisdictions

When you hire an installer, ask them directly:

• Are you licensed and insured in this state?
• Do you hold a cross-connection control certification?
• Can you pull the necessary permit?
• Will you perform the initial test and submit the report to my utility?

A qualified professional will handle all of this as part of a standard installation. Many certified backflow testers also handle installations, which means you may be able to use one provider for both the install and the required testing.

A licensed backflow tester performing an initial pressure test on a newly installed RPZ assembly using a differential pressure gauge test kit, outdoors near a commercial meter box

Step 4: Get the Device Tested Immediately After Installation

Here's something many property owners don't realize: most utilities require the backflow preventer to be tested immediately upon installation — before the water service is restored to full operation in some cases. This initial test verifies that the device was installed correctly and is functioning within manufacturer specifications.

The test must be performed by a certified backflow tester (separate from, or in addition to, the installer) and must be conducted using calibrated test equipment. The tester records pressure differentials and valve operation on a standardized test report form, which is then submitted to your utility.

What the test checks:

• That the check valves seat properly and hold pressure
• That the relief valve (on RPZ assemblies) opens at the correct differential
• That shutoff valves operate correctly
• That no internal leakage exceeds allowable limits

Keep a copy of your initial test report for your records. This document establishes your compliance baseline and will be referenced in every annual test going forward.

Step 5: Meet Your Utility's Submission Deadline

After installation and testing, you'll need to submit documentation to your utility. Depending on your municipality, this may include:

• A copy of the completed test report
• The permit and inspection certificate from your building department
• The installer's certification credentials
• A completed cross-connection control application (if you haven't already submitted one)

Submit these before your compliance deadline. If you're cutting it close, call your utility and let them know the work is underway — some utilities will grant a short extension if you can demonstrate good-faith progress.

Failure to submit on time doesn't just risk service interruption; it can also result in administrative fees in some jurisdictions.

Step 6: Plan for Annual Testing

Once you're installed and compliant, backflow preventer testing is an annual requirement in virtually every jurisdiction in the United States. The device is a mechanical assembly with moving parts that wear over time, and annual testing confirms it's still protecting the water supply effectively.

Here's how to stay on top of it:

• Set a calendar reminder 60 days before your annual test is due. This gives you time to schedule a certified tester without rushing.
• Use a backflow testing service with report submission built in. Many certified testers submit the report directly to your utility on your behalf, which removes one more task from your plate.
• Keep your test reports on file for at least three to five years, or longer if your utility specifies a retention period.
• Budget for it. Annual testing typically costs between $50 and $150 for a single residential or light commercial assembly, though prices vary by region and assembly type.

If a test reveals the device has failed — a check valve is leaking, or the relief valve is opening at the wrong pressure — you'll need to repair or replace the assembly and retest before the utility will accept your compliance report.

What Happens If You Ignore the Requirement?

Property owners sometimes put off compliance hoping the requirement will go away. It won't. Utilities have several enforcement tools:

• Water service discontinuation — Your meter can be pulled or your service locked off until you demonstrate compliance.
• Administrative penalties — Some utilities charge daily fines for non-compliance after the deadline.
• Liability exposure — If a backflow event occurs on your property and contaminates the municipal supply, your failure to install a required device creates significant legal risk.

None of these outcomes are worth the delay. The compliance process, from receiving the notice to submitting your test report, typically takes two to four weeks when you act promptly.

A property manager using a laptop to search for certified backflow testers online, with a compliance notice and calendar visible on the desk beside them

Finding a Certified Backflow Tester Near You

The fastest way to get compliant is to connect with a certified backflow professional in your area. Look for testers who are certified through the ABPA, AWWA, or your state's cross-connection control program, carry liability insurance, and have experience with your utility's specific reporting requirements.

FindBackflowTesters.com makes this easy: enter your zip code to find certified local professionals who can handle installation, initial testing, annual retests, and direct report submission to your utility — all in one place. Many professionals in our network offer same-week scheduling and will communicate directly with your utility if questions arise during the process.

Getting this handled quickly protects your water service, keeps you on the right side of your utility's compliance program, and — most importantly — helps keep the community's drinking water safe.

Ready to get started? Search for a certified backflow tester in your area today and take the first step toward full compliance before your deadline arrives.