Charlotte's CertifiedBackflowRepair
Failed a backflow test? We rebuild or replace the assembly, retest it and file the passing report.
Backflow Repair & Installation at a glance
- Service
- Backflow Repair & Installation in Charlotte, NC
- Service area
- Charlotte and 18 nearby towns
- Hours
- Open 24 hours, 7 days a week
- Phone
- (980) 408-1705
- Price
- Quoted before any work starts
- Warranty
- 1 year on labor for repairs and installations
- Credentials
- Licensed and insured. On Charlotte Water's approved tester list
- Company
- Alpha Drain, owner-operated by Spyro Vassiliou
Last updated November 2026
Backflow Repair in Charlotte, NC
Failed test, leaking assembly or new install
A backflow assembly is a mechanical device with springs, seats and rubber parts that wear out. When one fails its annual test, drips from the relief port or freezes and cracks over the winter, it needs a plumber who knows these assemblies. Alpha Drain repairs, rebuilds, replaces and installs backflow preventers for Charlotte homes and businesses.
Because we also do the backflow testing, the whole job stays with one company: diagnose, repair, retest and file the passing report with your water provider.
Get a Fast QuoteBenefits Of Our Backflow Repair Service
Click any box to learn more about backflow repair & installation with Alpha Drain
Repair before replace
Most failed tests come down to a worn check, a fouled seat or a tired spring. A rebuild with the correct parts for that make and model brings the assembly back into spec for far less than a new one. We only recommend replacement when the body is cracked, corroded or no longer supported.
The right assembly for the hazard
Irrigation systems, commercial water services, fire lines and equipment connections each call for a specific type of assembly. We install the type your water provider requires for the hazard, at the right height and clearance, and test it when it goes in.
Done means compliant
A repair is not finished until the assembly passes. We retest after the work and submit the passing report, so your record with the water provider is cleared.
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Why choose Alpha Drain for backflow repair
Some companies only test and some only do plumbing. Alpha Drain does both, and backflow is the part of the trade we have built the business around. That means a correct diagnosis from the gauge readings, the right parts, and a repair that passes the first time.
Repairs and installations carry our 1-year warranty on labor.
Get a Fast QuoteSigns a backflow assembly needs repair
- It failed its annual test
- Water drips or discharges steadily from the relief valve
- Water pressure dropped after the assembly
- Visible cracks, corrosion or leaks at the body or test ports
- It froze over the winter
- Handles or shutoff valves are seized and will not turn
What backflow repair costs
A rebuild is priced by the size and make of the assembly and the parts it needs. Replacement and new installation cost more and depend on pipe size, location and whether the work needs a permit. We quote the job after seeing the assembly and its test readings.
Call (980) 408-1705 with the make, model and size if you have them. They are stamped on the tag or body of the assembly.
How a backflow repair works
- We test the assembly, or review your failed report, to see which component is out of spec.
- You get an explanation of the fault and a price for the repair or replacement.
- Water is shut off, the assembly is opened and the failed parts are replaced, or the whole unit is swapped out.
- The assembly is flushed, put back in service and tested with a calibrated gauge.
- The passing report is filed with your water provider.
Related services. People who need backflow repair & installation often ask about these too.
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Backflow Repair in Charlotte, backed in writing
1-Year LaborWarranty
Covers labor on repairs and installations. Drain cleaning is excluded.
Backflow Repair Across Greater Charlotte
We bring backflow repair & installation to Charlotte and the towns around it. Pick your town for local details.
Backflow Repair In Just Three Easy Steps
An Easy Call
Call, text, or send the quote form. Tell us what is happening and we will tell you when we can be there, often the same day.
Step 1Choose Your Fix
We find the cause, show you what we see, and walk you through your options and the price before any work starts.
Step 2Problem Solved
We do the repair, test it, clean up, and file any paperwork. Labor on repairs and installations is covered for a year.
Step 3
Backflow Repair Questions, Answered
On a reduced pressure assembly, water coming from the relief port usually means debris is holding a check open or the relief valve is worn. A little discharge during pressure changes is normal. A steady drip or stream is not, and the assembly should be tested and repaired.
Most can be repaired. Rubber parts, springs and seats are sold as rebuild kits for common makes. Replacement is the better choice when the body is cracked or badly corroded, when parts are no longer made, or when a rebuild would cost close to a new assembly.
Yes. An irrigation system is a cross connection, because lawn chemicals and standing water in the lines could be drawn back into the drinking water. Charlotte Water and the other utilities around Charlotte require an approved backflow assembly on in-ground irrigation, tested on the schedule in your notice.
Above-ground assemblies should be insulated or enclosed, and irrigation assemblies should be shut off and drained before hard freezes. A cracked body from freezing is one of the most common reasons we replace assemblies in spring.
Yes. Every repair ends with a retest, and we file the passing report with your water provider.
Ready For Backflow Repair Done Right?
Open 24 hours. Licensed & insured. 1-year labor warranty.