BackflowNear Test-Due Reminder

Certified backflow testers in South Carolina

From the South Carolina Department of Environmental Services list of certified backflow assembly testers, read July 9, 2026. We list the businesses that test for property owners, with how many certified testers each has.

335 testers with a current certificate
30 testing businesses listed
20 certificates expire in 90 days

Also approved by water utilities in South Carolina

Being on a utility's list means that utility lets the company file backflow test reports in its system. It is not a state license.

What South Carolina's roster shows

  • 357 certified testers on the list, 335 with a current certificate.
  • 86 of them test for the public (employers that are not utilities, governments, schools or plants). The rest work in-house for utilities, cities, schools or plants.
  • Most testers for hire are based in Conway (17), Lexington (12), Hilton Head Island (9), Moncks Corner (7), Summerville (6).

Source: Inspectors and testers of backflow prevention equipment, South Carolina Department of Environmental Services. Read July 9, 2026; we re-read it regularly.

Backflow testing businesses in South Carolina

Ranked by our quality score: a current certificate, a phone that matches the business's Google profile, a website and the number of certified testers. Nobody can pay to move up.

What the badges mean
✓ SC Certified Backflow Tester Verified
A state roster lists at least one certified tester at this business, with a current certificate. The state sets the exam and renewal.
✓ SC Utility-Approved Tester Verified On the city list
The company is on a water utility's own approved list (the second badge names the list). That is the utility's approval, not a state license, and it counts for that utility.
3 certified testers
How many certified testers the roster lists at this business.
★ 4.8 (25 reviews)
The Google rating, shown as Google reports it. It does not change the order.

Order is by our quality score, never by payment. How we verify listings.

Towns with certified testing businesses

All 30 backflow testing businesses in South Carolina, by town

Beaufort: Eagle Fire Inc., Keith’s House of Plumbing, Inc., The Greenery Inc.

Bluffton: Coastal Pipe & Fire Solutions. LLC, LOW Tide Plumbing

Charleston: Liberty Fire Protection Inc./Marmic Fire & Safety

Columbia: O'Neal PLBG. & Backflow Spec.

Florence: Davis & Brown Environmental, Jacob Plumbing Company, Jordan Plumbing, Quality Service Company, Stokes Plumbing LLC, Urquhart Plumbing, Viking Fire Protection

Fort Mill: Fling Irrigation, TEC-Carolinas

Gaston: CBG Inc.

Hartsville: Anderson Plumbing, Weatherford Irrigation & Services

Hilton Head Island: South Island P S D

Ladson: VSC Fire & Security

Lexington: Carolina Backflow Specialties

Marion: Pee Dee Backflow Testing

Mt Pleasant: Daniel Island Backflow, LLC

Port Royal: Pender Brothers Inc.

Ridgeland: Malphrus Utilities, Tillotson Utility Services

Scranton: S & T Water Utilities

Summerville: Summit Fire & Security

West Columbia: Palmetto Automatic Sprinkler

Water utility backflow programs in South Carolina

Your utility sets your deadline, the testers it accepts and how the report is filed. Each page quotes the utility's own rules.

Questions

How do I check that a backflow tester is certified in South Carolina?

South Carolina Department of Environmental Services keeps the official list of certified backflow testers. Every business on this page comes from that list as we read it on July 9, 2026; each listing shows the certificate number, and you can confirm it on the state's own page.

How many certified backflow testers are there in South Carolina?

The South Carolina Department of Environmental Services list shows 357 certified testers, 335 with a current certificate. Many work for water utilities, cities or plants and do not test for the public; we list the ones who do (employers that are not utilities, governments, schools or plants).

Do backflow tester certificates expire?

Yes. South Carolina Department of Environmental Services certifies testers for a fixed period, and 20 of the current certificates on its list expire in the next 90 days. Each listing here shows when its testers' certificates expire.

How often does a backflow assembly need testing?

Most water utilities require testable backflow assemblies to be tested at installation and then every year, and some test more often for high-hazard sites. Your utility's notice gives your deadline and how to file the report.

Never miss your annual backflow test

Most water utilities require the backflow assembly on an irrigation, fire or commercial line to be tested every year, and a missed test can mean a shutoff notice. Tell us when yours was last tested and we'll text you a month before it is due, with certified local testers ready to book.

Free. One text before your test is due. No spam, cancel anytime. Privacy

Find a tester Set reminder