| Quick facts | Answer |
|---|---|
| Cost range | About $75-$175 per device; residential sources list $40-$85 |
| Time | Annual testing required; certification lasts 3 years |
| Who's qualified | A state-certified backflow prevention assembly tester with a current Department certification card |
West Ashley, SC: what's different here
West Ashley is a community in Charleston County, South Carolina, located about 10 miles and roughly 17 minutes by car from Charleston via the main highway. Homes in the area rely on the local water purveyor, which tracks backflow assemblies and enforces testing requirements. That means your sump pump backflow assembly must be on the annual testing schedule.
Who can perform sump pump backflow testing in West Ashley?
South Carolina requires all backflow testing to be done by a state-certified backflow prevention assembly tester. A certified tester holds an up-to-date certification card issued by the Department. A General Tester is approved to test assemblies for the general public and must have a backflow test kit.
How often is sump pump backflow testing required?
Each backflow assembly must be tested by a certified tester after installation and before use. After that, South Carolina regulations require a routine test annually. So plan on testing at install and every year afterward.
What does sump pump backflow testing cost in West Ashley?
Charleston-area annual backflow testing runs about $75-$175 per device. Another local source lists residential tests at about $40-$85, commercial tests around $125, and same-day emergency residential tests at $225. Ask what is included before booking.
What if the sump pump backflow test fails?
If a test fails, repair or rebuild kit work in the Charleston area typically costs $150-$400. The tester should tell you what failed before any work begins. Get the repair price in writing along with the retest.
How do you become a certified backflow tester in South Carolina?
Certification requires passing both a written exam and a practical exam. The regional certification workshop is a 3-day course. The certification is valid for 3 years and must be renewed to remain valid.
What to do next
- Confirm your assembly is due for its annual test or a post-installation test before use.
- Ask the tester for proof of a current state backflow prevention assembly tester certification card.
- Request a written quote that lists the test fee and any repair or rebuild kit cost if the test fails.
- Check the tester's certification status against the state Department's tester list.
- 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.




