How to Become an Approved Tester

We only accept backflow test results from Testers who are on our Approved Tester List.

How to become a CWS Approved Backflow Tester

  1. Complete SCDHEC certification.
  2. Attend a Charleston Water System orientation session. Contact us for more info.
  3. Follow our policies and procedures as outlined in our Cross Connection Control Program Manual.
  4. Tester recertification is required every three years ($80 fee.)
For more information, email us

Tester Recertification

To remain on our List of Approved Backflow Testers, you must complete recertification every three years.

Charleston Water System is an SCDHEC backflow recertification site, and we hold recertification tests quarterly. The fee is $80.

Upcoming recertification tests are listed below. To sign up, click the link to register online. 

Upcoming Backflow Tester Recertification Tests

Tests are held at our main office, 103 St. Philip Street, Charleston, SC 29403. To register, send an email to

  • June 2, 2016 @ 8:30 a.m.