What backflow testing costs in South Carolina

The third-party range

FindBackflowTesters’ South Carolina page says most tests in South Carolina run $50 to $250 per assembly. It describes Upstate towns as often near the low end for a routine annual test on a single irrigation or domestic assembly, and large commercial reduced-pressure assemblies, or visits that turn into repairs, toward the top of that range. The page dates its requirements review as August 2026. This directory re-read that page on October 2, 2026.

That sentence is their published range. It is not a bid, not an average computed by this site, and not “the Greenville price.” This site does not invent a local average.

What changes a tester’s price

Assembly type matters: a reduced pressure principle assembly, a double check valve assembly, and a pressure vacuum breaker are not the same job. So do access, the number of devices on the account, and a return visit after a failure. Repair, replacement, and after-hours work are usually outside the test itself unless the tester puts them in writing.

Utility charges are separate

A non-compliance charge belongs to the utility, not to the tester’s trip. Greenville Water’s November 10, 2025 manual describes a $500 non-compliance fee in the cases summarized on the Greenville Water page. Spartanburg Water’s June 4, 2026 manual describes its own notice steps and a $50 administrative fee when the utility hires the test, summarized on the Spartanburg Water page. Both figures are cited there. Check your utility’s notice for the deadline on your account.

Asking for a price

When listings exist, ask the tester. Until then, start from the SCDES General Tester List. This site does not charge a lead fee and does not publish one. General Testers can claim a listing once that form has a destination. It does not, yet.