Charleston, South Carolina · Local guide

Backflow Preventer Testing in Charleston, SC

Short answer

Backflow preventer testing in Charleston, SC, commonly costs between $40 and $200 per device. Call or text (843) 286-4721: CHS Backflow is a free referral service that connects you with a vetted local pro in Charleston. This annual service must be performed by a tester certified by the state of South Carolina.

Updated October 21, 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 $40 to $200 per device
Time Annual service required
Who's qualified South Carolina state certified tester

Who is qualified for backflow preventer testing in Charleston?

South Carolina requires all backflow testing to be performed by a state certified backflow prevention tester. This certification is valid for three years and must be renewed to remain active. The pros we refer must be certified by the state of South Carolina.

Pricing details for backflow preventer testing in Charleston

Pricing varies based on the device type and installation complexity. Residential irrigation tests are commonly priced around $40. Commercial tests for larger assemblies can range up to $125 per device.

The process of backflow preventer testing in Charleston

City cross-connection programs mandate that annual testing is performed by a certified backflow assembly tester. Following the test, the required test reports must be filed electronically with the appropriate city program.

What to do next

  1. Verify that the local pro has South Carolina state certification before scheduling the backflow preventer testing.
  2. Ask the pro for a quote that specifies the device type (e.g., DCVA or residential irrigation).
  3. Confirm that the tester will file the test report electronically, as required by the city program.
  4. Ensure the contractor provides proof of license and insurance.
  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 in Charleston, SC?

Yes, South Carolina requires all backflow testing to be done by a state certified backflow prevention tester. This ensures compliance with state regulations.

How often must backflow testing be performed?

Annual testing is performed by a certified backflow assembly tester. This regular service is necessary for compliance.

What is required to become a certified tester in South Carolina?

Certification requires passing a proctored practical exam and a written exam. This process leads to certification as a Backflow Prevention Assembly Tester.

What is the state fee for tester certification?

South Carolina charges a $150 certification processing fee for each backflow tester certification.

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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