| Quick facts | Answer |
|---|---|
| Cost range | $150 to $600 for a typical flat-rate repair visit |
| Time | Varies by device - confirm in your quote |
| Who's qualified | A DHEC-certified backflow prevention assembly tester |
Mount Pleasant, SC: what's different here
Mount Pleasant is in Charleston County, South Carolina, about 9 miles and roughly 15 minutes from downtown Charleston by car over the Arthur Ravenel Jr. Bridge and US-17. That short drive means Charleston-area backflow testers can reach Mount Pleasant homes quickly. Local plumbing work there commonly uses flat-rate pricing, which is where the $150 to $600 repair range comes from.
Does a backflow preventer need testing after a leak repair?
Yes. South Carolina requires backflow prevention assemblies to be tested immediately after any repairs are made to the assembly. All testing must be done by a state-certified backflow prevention tester.
How long does a South Carolina tester certification last?
A South Carolina backflow prevention tester certification lasts 3 years and must be renewed to remain valid. Recertification requires a 25-question written exam plus practical testing of a double check valve assembly, pressure vacuum breaker, and reduced pressure principle assembly. Recertification fees shall not exceed $50.00.
How does a tester's gauge affect the post-repair test?
South Carolina requires a certified tester's differential gauge to be accurate to within 2% of full gauge scale or +/- 0.3 psi differential. A gauge outside that tolerance can invalidate your required post-repair test. Ask the pro how their gauge is calibrated.
What to do next
- Confirm the pro holds a current DHEC-certified backflow prevention assembly tester certification card.
- Ask for a written quote so the $150 to $600 range is matched to your specific leak.
- Require the immediate post-repair test South Carolina mandates after any assembly repair.
- Verify the tester's differential gauge is accurate to within 2% of full scale or +/- 0.3 psi.
- 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.
