Charleston, South Carolina · Local guide

Backflow Preventer Leak Repair in Charleston, SC

Short answer

A local pro for backflow preventer leak repair in Charleston, SC, can be reached at (843) 286-4721. Costs for testing range from $90 to $652, and repairs are quoted based on damage or parts needed.

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 $90 to $652
Time Varies by device location
Who's qualified DES-certified backflow prevention assembly tester

Legal Requirements for Backflow Preventer Leak Repair in Charleston

South Carolina law requires that backflow prevention assembly testing be performed by a state-certified tester. If repairs are necessary, the repair must be made by a DES-certified backflow prevention assembly tester. This ensures the assembly meets all state standards.

The Repair Process for Backflow Preventer Leak Repair in Charleston

After any repair is completed, the assembly must be tested again immediately. Standard pricing covers most readily accessible devices. Additional fees apply for devices located in underground vaults or those requiring groundwater pumping.

Certification and Liability for Backflow Testers

A DES-certified tester assumes full responsibility and liability when testing a backflow prevention assembly. This certification is a 3-year credential that must be renewed to remain valid.

What to do next

  1. Verify the local pro has a DES-certified backflow prevention assembly tester license.
  2. Ask the pro for a quote detailing the specific parts needed for the backflow preventer leak repair.
  3. Confirm the repair will be followed by an immediate retest of the assembly.
  4. Check the state program list for current certification requirements.
  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

How often must a backflow tester's license be renewed?

A certified backflow prevention tester’s license in South Carolina expires every 3 years. This certification is a 3-year credential that must be renewed to remain valid.

What is the certification processing fee?

The South Carolina backflow tester application lists a $150.00 certification processing fee. This fee is part of the state's certification process.

What is the liability of a certified tester?

South Carolina law states that a DES-certified tester assumes full responsibility and liability when testing a backflow prevention assembly. This is a requirement of the Fire Protection Sprinkler Systems Act.

What is required for backflow prevention assemblies in South Carolina?

South Carolina requires backflow prevention assemblies used in the state to be on DES’s approved list. All backflow testing must be done by a state certified backflow prevention tester.

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.

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