| Quick facts | Answer |
|---|---|
| Cost range | $150 certification processing fee; recertification admin fee up to $50 |
| Time | Certification valid 3 years from issue date |
| Who's qualified | State-certified backflow prevention tester with a current certification card from the Department |
What does backflow tester recertification in Charleston involve?
Recertification requires a 25-question written exam plus hands-on testing of three assemblies in a wet lab: a double check valve assembly, a pressure vacuum breaker, and a reduced pressure principle assembly. Certification is earned after both a proctored practical exam and the written exam.
How much does tester recertification cost in Charleston?
South Carolina's backflow tester application lists a certification processing fee of $150.00 per certification. State regulation also allows a recertification administration fee, but it cannot exceed $50.00.
Where can you take a backflow certification class near Charleston?
South Carolina DES lists a training class at the North Charleston Convention Center with dates shown as June 9-12, 2026. Check the state's Cross Connection Control & Backflow Prevention page for current class listings.
What equipment rules apply to Charleston backflow testers?
State rules require a tester's differential gauge to be accurate to within 2% of full gauge scale, or plus/minus 0.3 psi differential. Gauges must meet this standard for testing to be accepted.
What types of certified backflow testers does South Carolina recognize?
South Carolina recognizes four types of certified testers: General Tester, Limited Tester, Inspector Tester, and Manufacturer's Agent. All backflow testing must be done by a state-certified backflow prevention tester.
What to do next
- Check your certification card's issue date - South Carolina tester licenses expire 3 years from issue.
- Schedule the 25-question written exam and the wet lab practical covering a double check valve assembly, a pressure vacuum breaker, and a reduced pressure principle assembly.
- Budget for the $150.00 certification processing fee plus any recertification administration fee up to $50.00.
- Verify your differential gauge is accurate to within 2% of full scale or plus/minus 0.3 psi before testing.
- 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.
