| Quick facts | Answer |
|---|---|
| Cost range | $65 to $250 per device, depending on the guide |
| Time | About 20 to 60 minutes per device |
| Who's qualified | A state-certified backflow prevention tester certified by South Carolina DES |
Mount Pleasant, SC: what's different here
Mount Pleasant is in Charleston County, South Carolina, about 9 miles and roughly 15 minutes by car from Charleston via the main highway. Many homes there are built with crawl spaces or slab foundations rather than basements. Coastal conditions and low-lying terrain mean backflow devices are often installed outdoors or near utility areas exposed to flooding and salt air.
Who can legally do a boiler backflow preventer test in Mount Pleasant?
South Carolina requires all backflow testing to be done 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 valid for 3 years.
How does a tester get certified in South Carolina?
The South Carolina backflow tester course is a 4-day certification course ending with a proctored written exam and a hands-on wet-lab evaluation. Recertification can be done through a 25-question written exam plus wet-lab testing of a double check valve assembly, a pressure vacuum breaker, and a reduced pressure principle assembly.
What equipment does the tester use on my boiler backflow preventer?
A certified tester in South Carolina must keep a differential gauge accurate to within 2% of full gauge scale or +/- 0.3 psi differential. Ask the pro to confirm the gauge is in calibration before the test starts.
Why does Mount Pleasant's coastal location matter for backflow devices?
Mount Pleasant sits in Charleston County, where coastal conditions and low-lying terrain mean many homes are built with crawl spaces or slab foundations rather than basements. Backflow devices are often installed outdoors or near utility areas exposed to flooding and salt-air conditions, which can affect the assembly.
What to do next
- Ask the tester to show their current South Carolina backflow prevention assembly tester certification card issued by the Department.
- Request a written quote that states the cost per device and the expected test time, roughly 20 to 60 minutes.
- Ask the pro to confirm their differential gauge is calibrated to within 2% of full gauge scale or +/- 0.3 psi differential.
- Check the South Carolina DES cross connection control page for the list of state-certified testers and upcoming certification classes.
- 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.
