Backflow Prevention Testing, Installation & Compliance in Rhode Island
If you received a notice from your water authority or a contractor flagged a backflow issue, you're in the right place. F.G. Lees & Son has been licensed to test, install, repair, and replace backflow prevention devices across Rhode Island since 1889 — and we file test results directly with your local water authority so you don't have to manage the paperwork.
Backflow happens when water flows in the wrong direction through your plumbing system — pushing contaminated water back into the clean supply line. It can occur when there's a sudden drop in water pressure, a main break, or a cross-connection between your potable water and another source like an irrigation system, fire sprinkler line, or commercial process water. A properly installed and regularly tested backflow preventer stops that from happening. Rhode Island requires annual testing on most commercial and cross-connected residential systems, and the results must be filed with the relevant water authority. That's where we come in.
Every Backflow Service We Provide — Under One Roof
We handle the full scope of backflow prevention work, from initial assessment through annual compliance testing and any repairs or replacements that testing reveals. There's no need to coordinate multiple contractors.
Surveying & Assessment
We start with an on-site evaluation of your property's cross-connections and existing devices. If you're not sure whether you have a backflow preventer, what type it is, or whether it's functioning correctly, our assessment answers all of that. You'll receive a written summary of what's installed, its condition, and what — if anything — needs to happen next.
Installation & Replacement
We install reduced pressure zone (RPZ) valves, double check valves, pressure vacuum breakers, and other device types appropriate to your application. If a device has failed or is no longer code-compliant, we replace it with a properly sized and permitted installation.
Annual Testing, Repair & Compliance Filing
Rhode Island requires annual backflow testing by a licensed tester on commercial properties and residential systems with cross-connections such as irrigation or fire suppression. We perform the test, document the results, handle any repairs the test uncovers, and file the report directly with your local water authority. Your compliance obligation is met — without you tracking a single deadline.
Built for Commercial Property Compliance
Restaurants, multi-family buildings, condominiums, hospitals, and commercial properties carry mandatory backflow compliance requirements under Rhode Island law. Missing a testing cycle or failing to file results with the water authority can result in fines, permit violations, or service interruption. We work with property managers, building owners, hotel engineers, and facilities directors who need a licensed contractor they can hand this obligation to entirely.
When you work with F.G. Lees, we track your testing schedule, perform the annual inspection, and submit results to the appropriate authority. You receive confirmation that your property is compliant. If a device fails testing, we provide a written repair or replacement recommendation with associated costs before any work is authorized. No surprises, no missed filings.
Why Rhode Island Property Owners Choose F.G. Lees for Backflow Prevention
F.G. Lees & Son has served Rhode Island since 1889 — making us the oldest plumbing company in the state. We hold the licensing required to test and certify backflow devices and file results with local water authorities, and our commercial division brings that same depth of experience to high-rises, hospitals, hotels, and condominium associations.
- Licensed backflow testers serving residential and commercial properties statewide
- Results filed directly with your local water authority as part of every testing appointment
- Written assessment and repair report provided after every visit
- Full-service capability — testing, installation, repair, and replacement handled by one team
- 130+ years serving Rhode Island homeowners and commercial property managers
- 4.5 stars across 73 Google reviews and BBB member in good standing
Backflow Prevention — Common Questions
What is a backflow preventer and do I need one?
A backflow preventer is a mechanical device installed on your water line that stops contaminated water from flowing backward into the clean supply. Rhode Island requires them on any property with a cross-connection — including irrigation systems, fire sprinkler lines, and many commercial applications. If you've received a notice from your water authority, you almost certainly need one tested or installed.How often does a backflow preventer need to be tested in Rhode Island?
Rhode Island requires annual testing by a licensed backflow tester on commercial properties and residential systems with cross-connections. Testing must be documented and results filed with the relevant local water authority. F.G. Lees handles both the test and the filing as part of every service appointment.What happens if my backflow preventer fails its annual test?
A failed test means the device is no longer providing adequate protection and must be repaired or replaced before it can be certified. We document the failure, explain what caused it, and provide a written repair or replacement recommendation with cost information before any work begins. In most cases, we can complete repairs in the same visit.What is an RPZ valve and is it different from a standard backflow preventer?
An RPZ — reduced pressure zone — valve is a type of backflow preventer that provides the highest level of protection against back-pressure and back-siphonage. It's commonly required on commercial properties, irrigation systems, and anywhere the risk of contamination is elevated. We install and service RPZ valves along with other device types including double check valves and pressure vacuum breakers.Can F.G. Lees file my backflow test results with the water authority for me?
Yes. Filing test results with the local water authority is included as part of every annual testing appointment we perform. You don't need to track the deadline, complete the paperwork, or submit anything yourself. We handle it and confirm when your property's compliance obligation has been met for the year.
Schedule Your Backflow Testing or Installation
Whether you've received a compliance notice or you're due for your annual test, we're ready to schedule a visit. F.G. Lees serves residential and commercial customers across Rhode Island — and we handle the testing, the repairs, and the filing, so your backflow compliance is managed from start to finish.