| Quick facts | Answer |
|---|---|
| Cost range | $50 to $150; one residential example $66 to $164 |
| Time | Varies by property - confirm timing in your quote |
| Who's qualified | South Carolina certified backflow prevention assembly tester; certification renews every 3 years |
West Ashley, SC: what's different here
West Ashley is a county subdivision in Charleston County, South Carolina, located about 10 miles and roughly 17 minutes by car from Charleston via US-17 S. It sits at coordinates around 32.8236, -80.0715. As part of the Charleston metro area, properties there fall under South Carolina's cross connection control rules for backflow prevention.
Who can perform an rpz valve test in West Ashley?
South Carolina requires all backflow testing to be done by a state certified backflow prevention assembly tester. Certification requires approved training, a written exam, and a hands-on practical exam. Ask the pro we refer for proof of certification and insurance.
How does rpz valve testing work in South Carolina?
A reduced pressure principle assembly is specifically named in South Carolina's routine testing rules for certified testers. State regulations require the tester's differential pressure gauge to be accurate within 2% of full scale or plus/minus 0.3 psi. A General Tester must also have personal possession of, or employer access to, a backflow assembly test kit.
How often is backflow testing required?
A certified tester's certification expires every 3 years, and renewal requires a 70% written score plus a practical test. Because tester certification runs on a 3-year cycle, rpz valve tests are typically part of ongoing annual or periodic compliance programs rather than one-time work.
What types of certified testers exist in South Carolina?
South Carolina classifies certified testers into 4 types: General Tester, Limited Tester, Inspector Tester, and Manufacturer's Agent. The approved tester course is a 4-day class requiring attendance all 4 days. Recertification includes a 25-question written exam.
What to do next
- Confirm your water provider requires an rpz valve test and ask how often it must be repeated.
- Ask the referred pro to show their South Carolina backflow prevention assembly tester certification, which renews every 3 years.
- Request a written quote comparing the $50 to $150 typical range for the initial or annual test.
- Ask whether the tester's differential pressure gauge meets the state's accuracy requirement of 2% of full scale or plus/minus 0.3 psi.
- 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.
