Last Updated: October 30, 2026 | By Cogan Plumbing, Licensed Master Plumber

Backflow Prevention & Testing in Central Arkansas

Backflow prevention keeps contaminated water in a property’s plumbing from flowing backward into the public water supply, using a mechanical assembly installed where a private system connects to city water. In Central Arkansas, Cogan Plumbing installs, tests, and repairs backflow assemblies for homes, businesses, and irrigation systems. Most assemblies must be tested annually, and the water provider requires documentation that the test was done.

What Backflow Is and Why It Matters

Under normal conditions, water flows one direction: from the city main, through your meter, into your building. Backflow is when that reverses. It happens two ways. Backpressure pushes water backward when a private system’s pressure exceeds the supply pressure, which can happen with pumps, boilers, and raised storage tanks. Backsiphonage pulls water backward when supply pressure drops suddenly, like when a water main breaks or firefighters open hydrants nearby and the line pressure falls.

Either way, whatever is in the private system at that moment can get pulled toward the public supply: irrigation water mixed with fertilizer, boiler water with treatment chemicals, hose water sitting in a bucket of pesticide, or commercial process water. The backflow prevention assembly is a set of spring-loaded check valves, and on larger assemblies a relief valve, that closes the door when flow tries to reverse. It is the one plumbing device in your building whose main job is protecting everyone else’s drinking water, which is exactly why it is regulated.

Who Needs a Backflow Assembly in Arkansas

Arkansas follows a cross-connection control framework: the state health authorities set the rules, and local water providers enforce them on their systems. We are describing the framework as it is generally applied, not quoting code at you, and your specific provider’s requirements control your property. In practice, assemblies are required and tested in these situations:

Irrigation systems. Lawn sprinkler systems are the most common residential trigger. Fertilizer, animal waste, and soil bacteria sit at sprinkler heads, and an irrigation line without a working assembly is an open cross-connection. Many Central Arkansas homes in Benton, Bryant, and Conway already have an assembly near the meter or the irrigation tie-in, whether the homeowner knows it or not.
Commercial properties. Restaurants, medical facilities, car washes, salons, and any business where chemicals, equipment, or processes connect to the water system are typically required to have assemblies, often larger reduced-pressure assemblies, tested annually. This is a core part of our commercial plumbing work.
Fire sprinkler systems. Commercial fire lines carry stagnant water that must never reach the drinking supply, so they have their own assemblies and testing schedules.
Homes with wells, pools, or boilers. Any second water source or pressurized system on the property raises the cross-connection risk and often the requirement.

If you received a letter from your water provider about testing, that letter is the requirement. It usually names a deadline and asks for a test report filed by a certified tester. Ignoring it can lead to fines or, in serious cases, water service interruption until the test is filed.

Annual Testing Requirements, Stated Plainly

Most backflow assemblies on irrigation and commercial systems must be tested once a year by a tester certified to perform the test, and the results must be reported to the water provider. Some higher-hazard commercial installations carry additional requirements, and new installations are tested at install and entered into the provider’s records.

What the annual test involves:

We notify you or your property manager before shutting anything down, because the water to the protected system is off briefly during testing.
Using a calibrated differential pressure gauge, we connect to the assembly’s test ports and measure how each check valve holds pressure.
On reduced-pressure assemblies, we also verify the relief valve opens at the correct pressure difference. That relief valve is the part that dumps water visibly when an assembly starts failing, which is why a puddle or discharge near an assembly should not be ignored.
We record the readings, note the assembly’s make, model, size, and serial number, and file the report with the water provider as required.
If the assembly passes, you are documented for another year. If it fails, you get a flat-rate repair quote before any work begins.

A failed test does not automatically mean a new assembly. Many failures are a fouled first check, worn rubber parts, or debris from a main break that a cleaning and a repair kit fixes. Replacement is the answer when the body is damaged, the assembly is obsolete with no parts support, or repair costs approach replacement cost. We will show you the gauge readings either way.

Signs Your Assembly Needs Attention Before the Test Date

Water discharging from the relief port. On a reduced-pressure assembly, occasional discharge during pressure fluctuations can be normal. A steady drip or repeated dumping is the assembly telling you a check is failing.
Visible corrosion, a cracked body, or a freeze split. Assemblies installed outdoors in Arkansas see hard freezes. A unit that was not winterized or insulated can crack, and a cracked body means replacement.
Low pressure past the assembly. A failing check valve restricts flow, and irrigation zones or building pressure suffer downstream.
A notice from your water provider. That letter means their records show your test is due or overdue. It is the most common reason people call us, and the fix is simply getting the test done and filed.

Homes and businesses in Little Rock, North Little Rock, and West Little Rock are served by different water systems with their own forms and filing habits. We handle the paperwork for the provider your property is actually on, not a generic version of it.

What Backflow Testing and Repair Cost

Annual testing is priced per assembly and quoted upfront, and it sits in line with general residential service pricing, where most repairs run roughly $150 to $500 depending on the job. Testing itself is a straightforward service visit. Repair cost depends on the assembly’s size and type: a repair kit for a small residential irrigation assembly is a modest job, while rebuilding or replacing a large commercial reduced-pressure assembly involves bigger parts, more labor, and sometimes a shutdown coordinated with the business.

As with all our work, repairs are quoted flat before work begins and there are no overtime charges. For property managers with multiple assemblies across multiple properties, we can group testing into scheduled visits and handle the filings in one pass, which keeps every property’s documentation current without twelve separate reminders. If testing reveals a drain or supply problem beyond the assembly, such as a failing sewer line or a line that needs leak detection, we will flag it with the test report rather than bury it.

Why a Licensed Master Plumber Should Test and Repair Your Assembly

Backflow work sits at the intersection of plumbing and public health regulation, and the test only counts when it is performed and filed correctly. A report with wrong readings, a missing serial number, or an uncalibrated gauge can be rejected by the water provider, leaving you documented as non-compliant even though someone was on site.

Cogan Plumbing is family-owned, licensed and insured, and the work is performed under Arkansas Master Plumber License MP6055, held by owner Josh Roberts. We use calibrated test equipment, record complete assembly data, and file with the correct provider. Cogan was voted Best Plumber in the Arkansas Times Best of Arkansas 2026 and named an AY Magazine Best of 2026 honoree. For homeowners in Maumelle, Sherwood, Jacksonville, and Cabot, that means the letter from the water company gets answered with a test that actually satisfies it.

Backflow Service Area

We install, test, and repair backflow assemblies across Central Arkansas, including Benton, Bryant, Little Rock, West Little Rock, North Little Rock, Maumelle, Sherwood, Jacksonville, Cabot, and Conway, throughout Pulaski, Saline, Faulkner, and Lonoke counties. See the full coverage map on our Central Arkansas page.

Covered for a Full Year

Cogan Plumbing backs the workmanship on every job for one full year. If a repair or installation fails within 12 months because of how we did the work, we come back and make it right. The warranty is included on every job — never sold as an add-on. Full terms are on our workmanship warranty page.

Related Services

Frequently Asked Questions

I got a letter from my water company. What do I actually need to do?

Your assembly is due for its annual test. Schedule the test, and we perform it with a calibrated gauge, document the assembly’s details and readings, and file the report with your water provider. Keep your copy of the report with your property records.

How long does a backflow test take?

Testing one assembly usually takes about 30 minutes, including the paperwork. The water to the protected system is off for part of that time. Properties with several assemblies take longer per unit but are handled in a single visit.

What happens if my assembly fails the test?

You get the readings and a flat-rate quote for repair before any work begins. Most failures are fixed with cleaning and a repair kit. If the assembly body is damaged or parts are no longer available, we quote replacement and explain why.

Why is water coming out of my backflow preventer?

On reduced-pressure assemblies, the relief valve discharges when a check valve is fouled or failing, or during sharp pressure changes. Brief discharge during a pressure event can be normal. Continuous dripping or dumping is not, and it means the assembly needs service before its test date.

Do I need a backflow preventer if I only have a hose faucet outside?

A simple hose bibb vacuum breaker is the small-scale version of this protection and is a good idea on any outside faucet. The tested assemblies this page covers are the larger devices required on irrigation systems, commercial services, and similar connections.

Can you test assemblies for all the properties I manage?

Yes. Property managers can schedule grouped testing across properties, and we handle the per-provider filings. That is the easiest way to keep a whole portfolio compliant without tracking a dozen due dates yourself.

Does Cogan Plumbing warranty its work?

Yes. Cogan Plumbing warrants its workmanship for one year — 12 months from the day the job is completed. If work we performed fails because of a workmanship defect during that year, we return and correct it. Fixtures and equipment also carry their own manufacturer warranties, separate from our workmanship coverage.

Get the Test Filed and Off Your List

If a provider letter is sitting on your counter, or your assembly is dripping at the relief port, the answer is the same: get it tested, documented, and filed.

Call the Traskwood and Saline County office at (501) 317-0637 or the West Little Rock location at (501) 710-3838. Office hours are Monday through Friday, 8am to 5pm, with 24/7 emergency service for active plumbing failures.