| Quick facts | Answer |
|---|---|
| Cost range | About $75-$250 for the test |
| Time | About 15-30 minutes on site |
| Who's qualified | A South Carolina DES-certified backflow prevention tester |
Mount Pleasant, SC: what's different here
Mount Pleasant is a large suburban town in Charleston County on the east side of Charleston Harbor and the tidal Wando River. It has a population of 90,801. The Mount Pleasant Historic District is identified as the oldest summer resort in Charleston County. The town is about 9 miles and roughly 15 minutes by car from Charleston via the main highway.
Who can perform an rpz valve test in Mount Pleasant?
South Carolina DES says all backflow testing must be done by a state certified backflow prevention tester. A certified tester holds an up-to-date certification card issued by the Department. Ask the pro we refer for proof of that certification and insurance.
How often is an rpz valve test needed?
A certified annual backflow test is commonly required yearly in most jurisdictions. The test covers a reduced pressure principle assembly, along with double check valve assemblies and pressure vacuum breakers during re-certification. Check with your water provider for your exact due date.
What does an RPZ assembly cost to install?
An RPZ backflow assembly is commonly installed for high-hazard uses. It typically costs about $600-$1,200 installed. The annual test on top of that usually runs $75-$250.
How do testers get certified in South Carolina?
South Carolina's certification program includes hands-on instruction plus a proctored practical exam and written exam. Re-certification requires a 25-question written exam and wet-lab testing of three assembly types. The Charleston-area class is held in North Charleston, with a session scheduled June 9-12, 2026.
What to do next
- Confirm your water provider requires the annual rpz valve test and note the due date.
- Ask the pro for proof of a current South Carolina backflow prevention assembly tester certification card.
- Request a written quote that separates the test fee from any repair or replacement parts.
- Verify the tester's certification through the South Carolina DES certification program before scheduling.
- 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.
