Backflow Testing Due? We're Certified to Handle It.
Annual backflow preventer testing, certification, repair, and installation for commercial properties and residential systems across Metro East Illinois.
- Repair-first approach, we fix it when we can
- Licensed, Bonded & Insured
- 100% satisfaction guarantee
- Repair-first approach, we fix it when we can
- Licensed, Bonded & Insured
- 100% satisfaction guarantee
- Repair-first approach, we fix it when we can
- Licensed, Bonded & Insured
- 100% satisfaction guarantee
- Repair-first approach, we fix it when we can
- Licensed, Bonded & Insured
- 100% satisfaction guarantee
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From Emergency Repairs to Full Installations
Whether it’s a leaking pipe, a failing water heater, or plumbing for a brand-new build, our licensed team handles projects of every size across the metro east region.
Emergency Plumbing
Burst pipes, sewer backups, no hot water, when it can’t wait, we answer. Day or night, Priority Plumbing shows up fast and fixes it right the first time.
Drains &
Sewer
Slow drains, clogs, and sewer line problems don’t fix themselves. From drain cleaning to full sewer replacement, we diagnose the root cause and get it flowing again.
Commercial Plumbing
Businesses can’t afford plumbing downtime. We handle everything from backflow testing and maintenance contracts to restaurant drain service and new construction rough-ins.
Water
Quality
If your water smells, tastes off, or leaves buildup on everything — there’s a fix. We install whole-home filtration, water softeners, HALO systems, and treat well water at the source.
Water
Heaters
No hot water is never convenient. We repair, replace, and install both tank and tankless water heaters — usually same day, and always with upfront pricing.
Pumps
Sump pumps, well pumps, ejector pumps — we install, repair, and replace all of them. Don’t wait for a pump failure to become a flooded basement or a dry tap.
Emergency Plumbing
Burst pipes, sewer backups, no hot water, when it can’t wait, we answer. Day or night, Priority Plumbing shows up fast and fixes it right the first time.
Drains &
Sewer
Slow drains, clogs, and sewer line problems don’t fix themselves. From drain cleaning to full sewer replacement, we diagnose the root cause and get it flowing again.
Commercial Plumbing
Businesses can’t afford plumbing downtime. We handle everything from backflow testing and maintenance contracts to restaurant drain service and new construction rough-ins.
Water
Quality
If your water smells, tastes off, or leaves buildup on everything — there’s a fix. We install whole-home filtration, water softeners, HALO systems, and treat well water at the source.
Water
Heaters
No hot water is never convenient. We repair, replace, and install both tank and tankless water heaters — usually same day, and always with upfront pricing.
Pumps
Sump pumps, well pumps, ejector pumps — we install, repair, and replace all of them. Don’t wait for a pump failure to become a flooded basement or a dry tap.
Backflow Testing Is Required, We Make It Simple
Most commercial properties connected to the public water supply in Illinois are required by the Illinois EPA to have their backflow prevention assemblies tested annually by a certified tester. It’s not optional. A missed test or a failed device that isn’t repaired puts your water service compliance at risk and, more importantly, puts the public water supply at risk of contamination.
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We’re certified backflow testers serving commercial properties, businesses, restaurants, property managers, and residential irrigation and fire suppression systems throughout Metro East Illinois, including Madison, Bond, Clinton, Montgomery, and Macoupin Counties. We test, certify, repair, and install backflow prevention assemblies and handle the documentation so you have what you need for your annual compliance record.
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Priority Plumbing Services is licensed, bonded, and insured in Illinois (License No. 055-045366) and EPA certified. Backflow prevention is one of our top commercial services, we’ve built specific expertise here because it’s recurring, compliance-driven work that commercial clients need a reliable partner for year after year. Every backflow job is backed by our 1-year warranty and 100% satisfaction guarantee.
Signs Your Backflow Prevention System Needs Attention
- You Received an Annual Testing Notice From Your Municipality
Most Metro East Illinois municipalities that enforce backflow testing requirements send annual notices to commercial property owners with registered backflow prevention assemblies. If you’ve received a testing notice or a compliance deadline, that’s your signal to schedule. Annual testing must be performed by a certified tester, we handle the test, the repair if needed, and the documentation submitted to your municipality.Â
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Urgency: Schedule before your compliance deadline — late testing can result in notices of violation or water service interruption.
- Your Backflow Preventer Has Never Been Tested or Inspected
If you’ve taken over a commercial property, opened a new business, or simply aren’t sure when the backflow preventer on your property was last tested, it’s worth finding out. An untested device may have been out of compliance for years. We can locate the assembly, assess its condition, and get you current on testing and documentation.Â
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Urgency: Call soon — unknown compliance status is a liability worth resolving.
- Backflow Preventer Is Leaking, Dripping, or Visibly Damaged
A backflow prevention assembly that’s leaking at the test cocks, dripping from the relief valve, or showing visible corrosion or physical damage is failing. A failing device may not be preventing backflow, which is its entire job. We repair or replace assemblies that fail testing or show visible signs of failure.
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Urgency: Call soon — a visibly failing backflow preventer needs repair or replacement before the next annual test.
- You're Installing a New Irrigation System or Fire Suppression System
New irrigation systems and fire suppression systems require a backflow prevention assembly as part of the installation, it’s a code requirement in Illinois. We install the correct backflow device for the application, test and certify it at installation, and register it with the municipality where required.Â
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Urgency: Coordinate early in the installation — backflow installation is part of the system connection process, not an afterthought.
- Your Business Has Changed Operations or Added New Water Connections
A change in business operations, adding a chemical mixing station, expanding a commercial kitchen, adding a boiler or cooling system, may change the cross connection risk profile of your facility and require upgrading or adding backflow prevention. We assess your current assembly against your current operations and confirm it’s the right device for your risk level.Â
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Urgency: Call for an assessment when operations change — a device correctly sized for one use may not be adequate for another.
Types of Backflow Prevention Service We Handle
- Annual Backflow Preventer Testing & Certification
Certified testing of RPZ valves, double check valve assemblies, pressure vacuum breakers, and other backflow prevention devices, performed by a licensed, certified tester to Illinois EPA standards. We complete the test, document the results, and provide the certification paperwork you need for municipal compliance. If the device passes, you’re certified for another year. If it fails, we repair it and retest before submitting documentation.
- Backflow Preventer Repair
Repair of RPZ assemblies and other backflow devices that fail testing, relief valve replacement, check valve seat repair, internal component service, performed by a certified technician who understands the device’s function and the repair standard required for certification. We repair and retest in the same service call whenever parts are available.
- Backflow Preventer Installation
New backflow prevention assembly installation for commercial properties, irrigation systems, fire suppression connections, and any application requiring a cross connection control device. We select the correct device type and size for the specific application, RPZ, double check, pressure vacuum breaker, or atmospheric vacuum breaker, and install it to Illinois plumbing code and manufacturer specifications.
- Irrigation & Fire Suppression Backflow Service
Residential and commercial irrigation systems and fire suppression systems require dedicated backflow prevention assemblies at the connection to the potable water supply. We test, certify, repair, and install backflow devices for both system types throughout Metro East Illinois, annual testing and certification included.
Benefits of Working With a Certified Backflow Tester
- Stay Compliant Without Managing It Yourself
Illinois EPA backflow testing requirements apply to most commercial properties connected to the public water supply. The testing must be performed annually by a certified tester, and the certification documentation must be submitted to the municipality. We handle the test, the paperwork, and the submission so compliance is a phone call to schedule, not a process you manage yourself. We also remind you when your next annual test is due.
- Certified Testing That Municipalities Accept
Backflow testing documentation submitted by an uncertified tester isn’t valid — it won’t satisfy the municipality’s compliance requirement regardless of whether the test was performed correctly. Our testers are certified to Illinois standards, and our documentation is accepted by municipalities throughout our Metro East Illinois service area. You get one test, one certification, one submission, done correctly the first time.
- Repair and Retest in the Same Visit
 A backflow preventer that fails a test needs repair before it can be certified. If the failure is a common component, relief valve, check seat, internal spring, we carry repair parts and can address the failure and retest the device in the same service call. You don’t schedule the test, schedule a repair, and schedule a retest on three separate days. We aim to complete it in one visit.
- Protect the Public Water Supply, and Your Liability
Backflow prevention exists to protect the public water supply from contamination by reversing flow from a commercial or residential facility back into the distribution system. A facility that allows backflow contamination, because their device failed or was never tested, faces significant liability beyond just a compliance violation. Annual testing by a certified tester is both a legal obligation and a straightforward liability management step.
Your Problem, Solved in 4 Simple Steps
We make the process simple so you can get back to what matters.
Call, Text, or
Book Online
Reach out however works best for you. Prefer not to talk on the phone? Book through our online scheduler anytime.
Get a Quote or Get Scheduled
Need a price first? We'll give you one. Ready to go? We'll get you on the schedule — same day when possible. You'll get a text or email confirmation.
We Show Up and Do the Work
Our licensed team arrives on time, explains what we're doing, and treats your home like our own. No surprises.
Transparent Billing, Warranty in HandÂ
You get a clear invoice and a 1-year warranty on our work. If anything isn't right, we come back and fix it.
WE'LL BE IN TOUCH
Hear It From Your Neighbors
The five star standard we hold ourselves to
- Susan Donaldson
- Tim Darling
- Connor Stich
- Lena Faitz
- Jennifer Diesen
- r williams
Proudly Serving Five Counties Across Southern Illinois
From our home base in Pocahontas, we serve homes and businesses across Madison, Bond, Clinton, Montgomery, and Macoupin Counties. One local team that shows up fast and gets it done right. If you’re in the Metro East or surrounding areas, we’ve got you covered!
Backflow Prevention Questions
Is backflow testing required every year in Illinois?
For most commercial properties connected to the public water supply in Illinois, restaurants, offices, retail spaces, multi-unit residential buildings, and any facility with a cross connection risk, yes. Illinois EPA cross connection control requirements mandate annual testing by a certified tester. The specific enforcement varies by municipality, but most Metro East Illinois municipalities with active backflow programs require annual certification. Call us and we’ll confirm what applies to your property.
What is a backflow preventer and why does it matter?
A backflow preventer is a valve assembly installed at the connection between a facility’s plumbing and the public water supply. Its job is to prevent water from flowing backward, from the facility back into the distribution system, in the event of a pressure drop or back siphonage condition. Without a properly functioning backflow preventer, contaminated water from a commercial kitchen, chemical system, or irrigation line could enter the public water supply. Annual testing confirms the device is still performing its function.
What happens if my backflow preventer fails the test?
A failed test means the device isn’t performing to the standard required for certification. We repair the failing component, relief valve, check seat, internal spring, and retest the device before submitting any certification documentation. A failed device that isn’t repaired and retested cannot be certified. We aim to complete repair and retest in the same service visit when parts are available.
What is an RPZ valve and do I have one?
RPZ stands for Reduced Pressure Zone, a specific type of backflow prevention assembly used for high-hazard cross connection applications. It’s the most common commercial backflow device in Metro East Illinois and is required for most commercial facilities, irrigation systems connected to potable water, and fire suppression systems. It looks like a horizontal pipe assembly with two check valves, a relief valve in the middle, and test cocks. If you’re not sure what type of device you have, we identify it during the service visit.
Do residential properties need backflow testing?
Residential properties with irrigation systems connected to the potable water supply typically require a backflow prevention device, and in many municipalities, annual testing. Residential fire suppression systems also require backflow protection. If you have an in-ground irrigation system or a residential fire sprinkler system, call us and we’ll confirm what your municipality requires.
How much does backflow testing cost?
Backflow testing is straightforward and priced accordingly, we provide upfront pricing when you call. Repair cost depends on the component that failed and whether parts are available same-visit. Installation pricing depends on the device type, size, and connection configuration. We provide written estimates before any installation work begins. Ask about annual service agreements for commercial clients who want testing, repair, and documentation handled automatically each year.