Charleston, South Carolina · Local guide

Commercial Kitchen Backflow Testing in Charleston, SC

Short answer

Commercial kitchen backflow testing in Charleston costs about $125 for 3/4-inch to 1.5-inch assemblies. Call or text (843) 286-4721: CHS Backflow is a free referral service that connects you with a vetted local pro in Charleston. South Carolina requires the test to be done by a state-certified backflow prevention tester.

Updated October 24, 2026 2 min readLeer en español

Quick answer

CHS Backflow is a free referral service for backflow testing in Charleston, SC: call or text (843) 286-4721 (our assistant answers 24/7 in English or Spanish; callbacks Mon–Fri, 8am–5pm ET) and a vetted local pro calls back within the hour during business hours; backflow repair or rebuild kit: typically $150–$400; serving Charleston, Mount Pleasant, North Charleston, Summerville, James Island, Johns Island.

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Quick facts Answer
Cost range About $125 for 3/4-inch to 1.5-inch commercial assemblies
Time Tests are scheduled online; ask the pro for timing
Who's qualified Must hold a state-certified backflow prevention tester certification

Who can perform commercial kitchen backflow testing in Charleston?

South Carolina requires all backflow testing to be done by a state certified backflow prevention tester. A certified tester is someone holding an up-to-date backflow prevention assembly tester certification card issued by the Department. Certification is earned after a proctored practical exam and a written exam.

How often does a Charleston commercial kitchen need backflow testing?

Charleston Water System says annual testing is required. All reports must be filed with the applicable filing fees through its third-party reporting process. Charleston's humid subtropical climate adds moisture and seasonal rainfall that can make plumbing vulnerability more relevant for commercial water systems.

How does a tester get certified in South Carolina?

South Carolina backflow tester certification is valid for 3 years and must be renewed to remain valid. The certification application includes a $150.00 processing fee per certification. Charleston has hosted a tester certification class at the North Charleston Convention Center.

What equipment standards apply to a backflow test?

South Carolina DES says a tester's differential gauge must be accurate to within 2% of full gauge scale or +/- 0.3 psi differential. South Carolina recognizes 4 types of certified backflow testers: General Tester, Limited Tester, Inspector Tester, and Manufacturer's Agent.

What to do next

  1. Confirm your assembly size (3/4-inch to 1.5-inch is the advertised $125 range) so your quote matches.
  2. Ask the pro for their up-to-date South Carolina backflow prevention assembly tester certification card.
  3. Verify the tester's certification is current - South Carolina certification must be renewed every 3 years.
  4. Schedule the annual test and confirm the report will be filed with the required fees through the water system's third-party reporting process.
  5. Call (843) 286-4721 or email [email protected] for a free quote from a licensed, insured local backflow tester.

CHS Backflow is a free referral service: an independent contractor does the work and may pay us a referral fee. You never pay us anything.

Related answers

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Quick answers

Is backflow testing required every year for commercial kitchens in Charleston?

Charleston Water System says annual testing is required. All reports must be filed with the applicable filing fees through its third-party reporting process.

Can anyone test a backflow assembly in South Carolina?

No. South Carolina requires all testing to be done by a state certified backflow prevention tester holding an up-to-date certification card issued by the Department.

How long does a South Carolina backflow tester certification last?

The certification is valid for 3 years and must be renewed to remain valid. Renewing requires a $150.00 processing fee per certification.

How accurate must a tester's gauge be?

South Carolina DES says a tester's differential gauge must be accurate to within 2% of full gauge scale or +/- 0.3 psi differential.

Backflow testing help in Tulsa

CHS Backflow is a free referral service connecting you with licensed, insured local backflow testers in Charleston and nearby areas. The pros we refer perform all work and may pay us a referral fee. We do not perform work or hold licenses. You pay no fee to us and may get other quotes.

Want a real number for your home?

Send the form or call (843) 286-4721. We connect you with a Charleston-area contractor who quotes the job. Free, no obligation.

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