| Quick facts | Answer |
|---|---|
| Cost range | $30 to $300 per device for testing; repair or rebuild kit $150–$400 |
| Time | Smaller tests take about 20 to 30 minutes; larger systems take longer |
| Who's qualified | Only a South Carolina state certified backflow prevention tester may test assemblies |
What should a restaurant do today or this week?
Confirm your backflow assembly is on the state's approved list and ask the tester to file the results. South Carolina requires all backflow testing to be done by a state certified tester, and backflow devices are checked at the pre-operational inspection for compliance.
How do I verify a tester's certification?
Ask the tester for their state certification and check it against the South Carolina DES approved tester list. South Carolina tester certifications are valid for three years from the date of initial certification or recertification.
What if the device fails the test?
A failed assembly may need repair or replacement before the inspection. HomeGuide reports a new backflow preventer costs $200 to $1,000 per device with installation, so ask for the repair price in your quote first.
What should I ask for in the quote?
Request the price per device, whether the tester is state certified, and the expected completion time. Ask the pro for proof of licence and insurance before work begins.
What to do next
- Find the backflow assembly on your water line and note its size and location before calling.
- Verify the tester's South Carolina state certification on the DES approved tester list.
- Ask the tester whether they can file results before your scheduled health inspection.
- Request an itemized quote covering testing per device and any repair or rebuild costs.
- 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.



