| Quick facts | Answer |
|---|---|
| Cost range | $75-$200 annual testing; $300-$800 for new installation |
| Time | A single test is usually quick; confirm timing in your quote |
| Who's qualified | A tester holding a current SC backflow prevention assembly tester certification card |
Summerville, SC: what's different here
Summerville is in Dorchester County, about 25 miles and roughly 32 minutes from Charleston by car via the main highway. The town has 53,775 residents and a typical home value of $361,180, pointing to a relatively high-cost housing market. Detached single-family homes make up 64% of the housing stock, and 64% of homes are owner-occupied. Heavy rain and flooding are relevant local risks, which makes backflow and sump system upkeep worth attention.
Who can legally do sump pump backflow testing in Summerville?
South Carolina requires all backflow testing to be done by a state-certified backflow prevention tester. That means a person holding an up-to-date certification card issued by the Department. Routine testing of assemblies protecting a public water system must be performed by a certified tester under S.C. Code Regs. § 61-58.7.F.
How do I check a tester's certification?
Ask the pro for their current backflow prevention assembly tester certification card issued by the South Carolina Department. Certification is valid for 3 years and must be renewed to remain valid. Renewal requires a written exam with a passing score of 70%.
What does the certification exam involve?
Becoming a certified tester in South Carolina requires a written exam and a wet lab exam. Recertification includes a 25-question written exam plus hands-on testing of a double check valve assembly, a pressure vacuum breaker, and a reduced pressure principle assembly.
Can I test my sump pump myself?
You can do a basic check by pouring about 5 gallons of water into the sump pit and verifying the pump shuts off automatically. Water should not flow back into the pit after shutdown. However, official backflow testing must be done by a state-certified tester.
Does plumbing cost affect who I hire?
South Carolina residential plumbing work exceeding $500 requires a license. Annual testing at $75-$200 falls below that threshold, but a new preventer installation at $300-$800 may approach it. Ask the pro for proof of licence and insurance before work begins.
What to do next
- Ask the pro to show their current SC backflow prevention assembly tester certification card before testing.
- Request a written quote that separates annual testing ($75-$200) from any new preventer installation ($300-$800).
- If a new preventer is needed, ask whether the residential plumbing work will exceed $500, which requires a license in SC.
- After testing, get the results in writing, since some SC cities require annual test results on file.
- 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.


