| Quick facts | Answer |
|---|---|
| Cost range | About $50 for 3/4 inch and under; repairs $150-$400 |
| Time | Short visit; annual testing required by many utility programs |
| Who's qualified | A state certified backflow prevention tester with an up-to-date certification card |
Johns Island, SC: what's different here
Johns Island sits in Charleston County, about 12 miles and roughly 19 minutes by car from Charleston via the main highway. The island has backflow-testing businesses listed in state and local tester directories, including entries with Johns Island addresses. Charleston County is expected to see the probability of the 100-year rainfall event likely triple by the mid-21st century, which makes protecting the water supply through backflow testing increasingly important for local properties.
Who can perform a water meter backflow test in Johns Island?
South Carolina requires all backflow testing to be performed by a state certified backflow prevention tester. A certified tester holds 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 often is backflow testing required?
For some utility programs in South Carolina, annual backflow testing is required after installation and then every year thereafter. Ask your water utility which schedule applies to your property. Keeping up with the yearly test helps you avoid compliance notices.
What equipment must a Johns Island tester use?
South Carolina DES says the tester's differential gauge must be accurate to within 2% of full gauge scale or +/- 0.3 psi differential. You can ask the tester about gauge accuracy before the test. This standard applies to every certified tester in the state.
What does backflow tester certification renewal involve?
A certified backflow prevention tester license in South Carolina expires every 3 years. To renew, the tester must take a 25-question written exam and test a double check valve assembly, a pressure vacuum breaker, and a reduced pressure principle assembly in the wet lab. The state-sponsored recertification workshop costs $250 per person.
How fast can I get a water meter backflow test scheduled?
Charleston-area backflow service pages say a vetted local pro can call back within the hour during business hours. Johns Island has backflow-testing businesses listed in state and local tester directories. A referral service can connect you with a licensed, insured local tester quickly.
What to do next
- Confirm your meter size - the $50 coupon price applies to 3/4 inch and under, so larger meters may cost more.
- Ask the tester to show their up-to-date backflow prevention assembly tester certification card issued by the South Carolina Department.
- Ask whether your utility requires annual testing after installation, and get the test report for your records.
- If a repair is needed, get the rebuild kit cost in writing - kits typically run $150 to $400.
- 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.
