Charleston, South Carolina · Local guide

Annual Backflow Certification in Charleston, SC

Short answer

Annual backflow certification costs range from $40 for residential irrigation to $125 for commercial testing in Charleston. Call or text (843) 286-4721: CHS Backflow is a free referral service that connects you with a vetted local pro in Charleston. Contact a local pro for proof of licence and insurance to schedule your annual backflow certification.

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 - $125
Time Varies by device type and testing scope
Who's qualified State-certified backflow prevention tester

Why is annual backflow certification required in Charleston?

Charleston Water System requires annual testing for backflow prevention. All reports must be filed with the applicable filing fees through the system's third-party reporting process. South Carolina DES mandates that all backflow testing must be done by a state-certified backflow prevention tester.

What does backflow tester certification involve?

Certification is earned after a proctored practical exam and a written exam. Testers must renew their certification every three years. Recertification can require a 25-question written exam plus wet-lab testing of specific valve assemblies.

Where is backflow tester training available near Charleston?

Certification training classes are available locally in the Charleston area. One listed class is held at the North Charleston Convention Center. Another training option is offered at Midlands Technical College.

How do different device types affect the cost of annual backflow certification?

The cost varies depending on the type of device being tested. Standard residential irrigation testing is listed at $40. Testing for DCVA or RPZ assemblies is listed at $65, while commercial tests are listed at $125.

What to do next

  1. Verify that the local pro holds an up-to-date backflow prevention assembly tester certification card issued by the Department.
  2. Ask the pro for a quote that specifies the type of test (e.g., residential vs. DCVA/RPZ) to ensure accurate pricing.
  3. Confirm the testing meets the requirements of Charleston Water System for annual reporting.
  4. Ensure the tester's certification is current, as it must be renewed every three years.
  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.

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Quick answers

Who is qualified to perform backflow testing in South Carolina?

All backflow testing must be performed by a state-certified backflow prevention tester. A certified tester holds an up-to-date card issued by the Department.

How often does a backflow tester certification expire?

South Carolina backflow prevention tester certification expires every three years. Renewal is required to maintain certification status.

What is required for backflow tester recertification?

Recertification can require a 25-question written exam. It may also require wet-lab testing of a double check valve assembly, pressure vacuum breaker, or reduced pressure principle assembly.

Where can I find local training for backflow testers?

Charleston-area training classes are available at the North Charleston Convention Center. Midlands Technical College also offers a backflow tester course.

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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