Mount Pleasant, SC

Backflow Preventer Replacement in Mount Pleasant, SC

Short answer

Backflow preventer replacement in Mount Pleasant costs between $50 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 Mount Pleasant. South Carolina rules mandate that each backflow prevention assembly must be tested after installation and before use.

Updated October 27, 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 $50 to $200 per device
Time Varies by home - confirm in your quote
Who's qualified Licensed plumbers, water and sewer line contractors, or fire sprinkler contractors

Mount Pleasant, SC: what's different here

Mount Pleasant is situated in Charleston County, South Carolina. The area is approximately 9 miles and 15 minutes from Charleston via US-17. Local housing stock includes homes built around 2001, indicating established neighborhoods. Property sample reports note that the area has a significant flood risk, which is relevant for outdoor plumbing and backflow equipment exposure.

SC Regulations for Backflow Preventer Replacement

South Carolina Code Regs require that backflow prevention assemblies be tested after installation and before use. Furthermore, these assemblies must be tested at least once annually by a certified tester. Testing is also required immediately after any repairs are made to the assembly.

Who Can Perform Backflow Preventer Replacement in Mount Pleasant?

South Carolina lists licensed plumbers, licensed water and sewer line contractors, and licensed fire sprinkler contractors as groups that may install or repair these devices. A licensed plumber may only perform backflow prevention device work on water lines within the scope of their license.

Understanding Local Housing and Requirements in Mount Pleasant

Mount Pleasant is located in Charleston County, South Carolina. Local housing stock, such as sample listings, shows some homes were built around 2001. Property sample reports indicate a 72% to 80% chance of flood reaching the building in the next 30 years.

What to do next

  1. Verify the local pro has a state-issued backflow prevention assembly tester certification card.
  2. Ask the pro for proof of license and insurance before any backflow preventer replacement work begins.
  3. Confirm the required testing schedule, as SC rules mandate testing after installation and annually.
  4. Review the quote to ensure the contractor is one of the three groups listed in South Carolina state regulations.
  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 prevention assembly be tested in South Carolina?

South Carolina rules require backflow prevention assemblies to be tested at least once annually by a certified tester. Testing is also required immediately following any repairs made to the assembly.

What is the renewal fee for a backflow tester certification in South Carolina?

The South Carolina backflow tester renewal fee referenced in the regulation is capped at $50.00.

Who is required to perform the backflow testing?

South Carolina DES states that all backflow testing must be done by a state certified backflow prevention tester. A certified tester holds an up-to-date certification card issued by the Department.

What is the application fee for tester certification?

The application fee shown in the state form for backflow tester certification is $150.00 per 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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