| Quick facts | Answer |
|---|---|
| Cost range | About $75–$250 per device; $65–$175 with report filing included |
| Time | Single-visit test plus report submission |
| Who's qualified | A South Carolina state-certified backflow prevention tester |
Johns Island, SC: what's different here
Johns Island is in Charleston County, South Carolina, about 12 miles and roughly 19 minutes by car from Charleston via the main highway. Homes here tie into the public water system, which must keep records of backflow assemblies and annual test results. Charleston-area tester lists include Johns Island and nearby ZIP codes, showing local availability of certified testers.
Who is responsible for backflow test report filing on Johns Island?
South Carolina rules put the duty on the certified tester. The public water system must receive a written report of inspection and testing results for all tested assemblies, and the tester submits it. The water system keeps records of all backflow assemblies and annual test results.
How often is backflow testing required in Johns Island, SC?
State rules require each backflow assembly to be tested after installation and before use, then at least once a year by a certified tester. Every tester must pass a written exam and a wet lab exam to be certified, and certification expires every 3 years.
How much does backflow testing cost near Johns Island?
Typical residential testing runs about $75 to $250 per device, averaging about $143. A compliance test with report filing included is often priced around $65 to $175. Most homes need just a single-visit test plus report submission.
Are certified backflow testers available around Johns Island?
Charleston-area tester lists include Johns Island and nearby ZIP codes, so certified testers are locally available. Johns Island sits about 12 miles, or roughly 19 minutes by car, from Charleston via the main highway.
What to do next
- Call CHS Backflow at (843) 286-4721 for a free referral to a licensed, insured local backflow tester.
- Ask the pro for proof of South Carolina backflow prevention tester certification and insurance before the visit.
- Request a written quote covering the test plus report filing, typically $65 to $175.
- Confirm the tester will submit the Backflow Assembly Test Report Form to the public water system after the annual test.
- 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.



