| Quick facts | Answer |
|---|---|
| Cost range | About $85–$125 standard; complex jobs can reach $652 |
| Time | Annual test; certification renews every 3 years |
| Who's qualified | South Carolina state-certified backflow prevention tester |
Why is annual backflow testing required in Charleston?
Charleston Water System requires annual testing, and all reports must be filed with the applicable filing fees through its third-party reporting process. Charleston's roughly 51 inches of yearly rain makes irrigation systems and backflow prevention common in the area.
Who can perform backflow certification in Charleston?
South Carolina requires all backflow testing to be done by a state-certified backflow prevention tester holding an up-to-date certification card from the Department. Certification lasts 3 years before renewal is required.
How does someone become a certified backflow tester in South Carolina?
The initial certification course is a 4-day course, and students must pass both a written exam and a hands-on lab test. Recertification is required every 3 years, and the recertification fee shall not exceed $50.
Where can testers train near Charleston?
South Carolina DES lists a Charleston-area tester certification class at the North Charleston Convention Center, with dates shown as June 9-12, 2026. Training is offered locally in the Charleston area.
What to do next
- Ask for a written quote stating whether your device is residential or commercial and its size in inches.
- Verify the tester holds an up-to-date South Carolina backflow prevention assembly tester certification card.
- Request proof of insurance and the tester's certification type before booking.
- Confirm the pro will file your report with the applicable filing fees through the third-party reporting process.
- 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.
