| Quick facts | Answer |
|---|---|
| Cost range | About $65 for RPZ and DCVA devices |
| Time | Varies by device - confirm timing in your quote |
| Who's qualified | South Carolina state-certified backflow prevention tester with current certification card |
North Charleston, SC: what's different here
North Charleston sits about 6 miles and roughly 10 minutes by car from Charleston via main highway. It is among the most affordable parts of Charleston County, with a median home price of $346,495 in 2025. The area's humid subtropical climate brings heavy rain from tropical systems and summer thunderstorms, and low-lying coastal groundwater makes backflow protection a real local concern.
Who can legally perform an rpz valve test in North Charleston?
South Carolina Regulation 61-58 requires each reduced pressure principle assembly to be tested after installation and before the customer uses it. Routine testing of RPZ assemblies, double check valve assemblies, and pressure vacuum breakers by a certified tester is also required. Your water provider can confirm your testing schedule.
Why is rpz valve testing important in North Charleston?
Charleston County is a low-lying coastal area where groundwater and flood exposure make cross-connection control especially relevant. Heavy rain from tropical systems and summer thunderstorms is a recurring concern for water-system protection. A working RPZ assembly keeps contaminated water out of your supply.
How do I verify a backflow tester's certification in North Charleston?
A South Carolina tester certification is valid for 3 years and must be renewed, with a renewal exam passing score of 70%. Tester gauges must be accurate within 2% of full scale or plus/minus 0.3 psi differential. Ask the pro to show a current certification card before the rpz valve test.
What to do next
- Call CHS Backflow at (843) 286-4721 for a free referral to a licensed, insured local backflow tester.
- Ask the pro for a current South Carolina backflow prevention assembly tester certification card before the rpz valve test.
- Request a written quote confirming the per-device price for your RPZ assembly.
- Ask the pro to confirm the test gauge accuracy meets the state requirement of within 2% of full scale or plus/minus 0.3 psi differential.
- 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.
