| Quick facts | Answer |
|---|---|
| Cost range | Backflow repair or rebuild kit: $150–$400 |
| Time | Pro can often schedule quickly once booked; callback within the hour, Mon–Fri 8am–5pm ET |
| Who's qualified | State-certified SC backflow tester; certification renews every 3 years |
What should I do today if my backflow failed?
Call CHS Backflow at (843) 286-4721 for a free referral to a licensed, insured local backflow tester. Ask whether they can inspect, repair and retest in one visit. A certified tester must test an assembly immediately after repairs are made to it.
What should I check when hiring a pro?
South Carolina requires all backflow testing to be performed by a state certified backflow prevention tester. Certification expires every 3 years, so confirm the tester's certification is current. Ask the pro for proof of licence and insurance before work starts.
Why does a West Ashley backflow fail?
Charleston averages about 44 inches of precipitation a year and sits at very low elevation near the coast. Wet, humid, salt-exposed conditions can corrode exterior assemblies over time. Flooding is also common, so outdoor devices may need more frequent visual checks for damage, corrosion or leaks.
What paperwork does the water utility need after a repair?
South Carolina permitting guidance says annual backflow test results must be submitted to the utilities department. Backflow devices must be tested and results submitted before a Certificate of Occupancy is issued. City permit review can take roughly 10 business days, plus a couple of days to process.
What to do next
- Call (843) 286-4721 and describe the failed test notice from your water utility.
- Ask the pro to confirm their SC backflow tester certification is current (it renews every 3 years).
- Request a quote that covers inspection, repair and retest in one visit, plus proof of licence and insurance.
- Confirm who will submit the annual test results to the utilities department after the retest.
- 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.




