Failed Backflow Inspection in North Charleston: Who Retests ASAP?

Quick facts	Answer
Cost range	Repair or rebuild kit: $150–$400. Residential annual test: $45 per location.
Time	Local pro calls back within the hour, Mon–Fri, 8am–5pm ET.
Who's qualified	Must be a South Carolina state-certified backflow prevention tester.

What should we do today if our inspection failed?

Call (843) 286-4721 today and tell the referral team your business address and the deadline the water authority gave you. Ask for a local certified tester who can schedule the retest inside your window. Keep your failed inspection report handy so the pro can see which assembly failed.

Does a failed assembly always need repair before retesting?

Not always. Some failures come from a dirty or misadjusted valve, while others need a repair or rebuild kit. The tester can diagnose the cause on site and tell you whether a repair is needed before the retest. Repair or rebuild kits typically run $150–$400.

What should we verify when hiring a tester?

Confirm the tester holds a current South Carolina state certification, since certificates expire every 3 years from the date of issue. Ask for proof of that certification and proof of insurance before work starts. Make sure the tester uses a differential pressure gauge accurate to within 2% of full scale or ±0.3 psi.

Does the replacement assembly need to be on the state list?

Yes. South Carolina DES requires backflow prevention assemblies to be on the state approved-assembly list. Check your device against that list before the retest so you do not fail again for an unapproved model.

What to do next

Call the water authority and confirm the exact retest deadline in writing.
Ask the pro for proof of South Carolina tester certification and check its 3-year expiration date.
Confirm the pro tests with a differential gauge accurate to within 2% of full scale or ±0.3 psi.
Ask the quote to list any repair or rebuild kit separately from the retest fee.
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.

Quick answers

Do you repair backflow preventers or just test them?

CHS Backflow is a free referral service, so we do not repair or test devices ourselves. We connect you with an independent local pro who can diagnose the failure and handle repairs or retesting. Repair or rebuild kits typically cost $150–$400.

How soon can you come out for a retest in North Charleston?

Timing depends on the local pro's schedule, so call (843) 286-4721 as soon as you receive your deadline. A local pro calls back within the hour during business hours, Mon–Fri, 8am–5pm ET.

Will you help me pass the second inspection quickly?

We cannot guarantee a pass, but we help you reach a certified tester fast. The pro checks the assembly against the state approved-assembly list before the retest. Ask the pro for proof of certification before scheduling.

What causes a backflow assembly to fail inspection?

The pro will diagnose the cause on site, since failures can come from worn parts or valve problems. South Carolina requires annual testing of each assembly unless a specific exception applies. A failed test can also mean the assembly is not on the approved list.