Greenville Water: backflow testing rules
Serves Greenville, SC. Every point below comes from Greenville Water's own pages, linked; check your notice for your own deadline.
Who must test
- Most commercial, industrial, irrigation (as noted) and private fire protection customers are required to install, maintain and test a backflow prevention assembly. Source.
- All existing backflow prevention assemblies must be tested at least once annually. Source.
Notices and deadlines
- Greenville Water mails the initial test notice 45 days before the device test due date, and allows a 15-day grace period after the due date. Source.
How the report is filed
- All certified backflow testers must upload test results through Greenville Water's Backflow Test Result Portal (backflow.greenvillewater.com). Source.
- For new assemblies the test report must reach Greenville Water within 10 days of starting water service. Source.
- If an assembly fails and cannot be repaired immediately, the tester must return the failed test report to Greenville Water the same day. Source.
Tester registration
- Testers new to Greenville Water must email a picture of their certification to bfp@greenvillewater.com; portal registration requires a valid SCDHEC certificate. Source.
- Testers register on the Greenville Water backflow portal, and registration requires a valid SCDHEC certificate. Source.
If a test is missed
- A test 15 days late draws a $500 non-compliance fee, and Greenville Water hires a third party to test the device. Source.
- For a non-compliant device Greenville Water hires a third-party vendor to complete the test and bills repair costs to the account. Source.
- Customers who do not return completed test reports within the 60-day period are in noncompliance and face administrative action up to discontinuance of service. Source.
Program
- Greenville Water has a service-wide backflow prevention program administered by its Cross Connection Control Program, under its Cross Connection Control Manual. Source.
How to file your backflow test with Greenville Water
- Read your notice. Greenville Water mails the initial test notice 45 days before the device test due date, and allows a 15-day grace period after the due date.Source.
- Book a tester Greenville Water accepts. See finding a tester below; book early so there is time to repair a failed assembly.
- The tester tests the assembly and fills in the test report. A failed assembly is repaired and tested again.
- The report is filed. All certified backflow testers must upload test results through Greenville Water's Backflow Test Result Portal (backflow.greenvillewater.com).Source.
- Keep a copy and set a reminder for next year. Set a free test-due reminder.
Finding a tester Greenville Water accepts
We found no tester list on Greenville Water's own pages. Use a state certified tester, and check your notice in case it names the testers or the portal it accepts.
Before you book, ask the tester:
- Are you registered with Greenville Water?
- Will you send the test report to the utility for me, and how?
- When is my report due? The date is on your notice; the tester needs time to test, repair if needed and file.
Other water utilities in South Carolina
- City of Columbia Water
- Charleston Water System
- Grand Strand Water and Sewer Authority
- Spartanburg Water
- Beaufort-Jasper Water and Sewer Authority
- Mount Pleasant Waterworks
- Startex-Jackson-Wellford-Duncan Water District
- City of Florence
Read October 6, 2026. Program page: greenvillewater.com.