| Quick facts | Answer |
|---|---|
| Cost range | $25 to $179 per assembly; commercial subscriptions about $80 |
| Time | Roughly 10 minutes from Charleston by car |
| Who's qualified | A South Carolina DES state certified backflow prevention tester with a current certification card |
North Charleston, SC: what's different here
North Charleston sits in Charleston County, about 6 miles and roughly 10 minutes by car from Charleston via the main highway. The median year built is 1967, so older buildings may have crawl-space access or hard-to-reach device locations. The area gets about 44 inches of annual precipitation with 0 inches of snowfall, and humid Lowcountry weather can make year-round backflow assembly upkeep important. Average summer highs are 87°F and winter lows around 44°F.
What does commercial backflow testing cost in North Charleston?
Published backflow testing prices range from $25 to $179 per assembly, and utility testing prices run $25 to $99. A Charleston-area provider lists a commercial backflow testing subscription at $80, with a $100 red-tag fee if testing is needed within 48 hours. RPZ and DCVA assemblies are listed at $65 to test, more than the $40 residential irrigation rate.
Who can perform backflow testing in North Charleston?
South Carolina DES says all backflow testing must be done by a state certified backflow prevention tester. That means a person holding an up-to-date backflow prevention assembly tester certification card issued by the Department. Certification is earned after a proctored practical exam and a written exam.
How does North Charleston's housing stock affect commercial backflow testing?
North Charleston's median year built is 1967, so many buildings are older and device locations or plumbing access can be less convenient. One local 1950 property listing shows a crawl space foundation, a condition that can complicate access to backflow assemblies. Ask the pro to confirm access needs when quoting.
How do I verify a tester's South Carolina certification?
Ask the pro for proof of a current backflow prevention assembly tester certification card issued by South Carolina DES. Certification must be renewed every 3 years. South Carolina recognizes 4 tester types: General Tester, Limited Tester, Inspector Tester, and Manufacturer's Agent. Check the state DES cross connection control program list rather than trusting a card alone.
What to do next
- Ask for an itemized quote showing the per-assembly test fee and any rush or red-tag fee, such as the $100 fee for testing within 48 hours.
- Confirm your device type before the visit, since RPZ and DCVA assemblies are listed at $65 versus $40 for simpler irrigation devices.
- Verify the tester holds an up-to-date South Carolina DES backflow prevention assembly tester certification card, renewed within the last 3 years.
- Use the state DES cross connection control program list to confirm certification instead of taking a card at face value.
- 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.
