| Quick facts | Answer |
|---|---|
| Cost range | About $40 to $85 for a standard residential irrigation device |
| Time | Usually one scheduled visit; hard-to-access devices take longer |
| Who's qualified | A state-certified backflow prevention tester with a current DES certification card |
Who can perform a residential backflow inspection in Charleston?
South Carolina requires all backflow prevention assembly testing to be done by a state-certified backflow prevention tester. A certified tester holds an up-to-date certification card issued by South Carolina DES. Ask the pro for proof of certification and insurance before the test.
How does Charleston's rainfall affect backflow risk?
Charleston County averages about 44 to 45 inches of rain per year. Frequent precipitation and stormwater pressure can increase cross-connection risk around irrigation and plumbing systems, which is why regular testing matters locally.
What does backflow tester certification involve in South Carolina?
Certification requires a 4-day course with a written exam and a hands-on practical exam. The credential must be renewed every 3 years. South Carolina recognizes four tester types: General Tester, Limited Tester, Inspector Tester, and Manufacturer's Agent.
Where can testers get certified near Charleston?
South Carolina DES holds tester certification classes in the Charleston area, including North Charleston. An upcoming class is listed for June 9-12, 2026. Completion of a backflow tester training course is a prerequisite for certification.
What to do next
- {'text': 'Confirm your device type and size, since 3/4-inch to 1-inch residential devices are commonly tested at the base rate.'}.
- {'text': 'Ask the pro to show a current South Carolina DES backflow tester certification card before the test.'}.
- {'text': 'Request an itemized quote that states whether underground vaults or pumping-out water will add fees.'}.
- {'text': "Schedule the test for a single visit and ask upfront if your device's location could extend the appointment."}.
- 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.
