GO TO: Cross-Connection Control | Commercial Development | Project Review | Water System Standards

The Cross Connection Control Section (CCCS) of the Board of Water Supply was established to ensure that the public drinking water system is protected from possible contamination through cross-connections and backflow conditions. CCCS manages and oversees the agency's cross-connection control and backflow prevention assembly annual testing program. The program encompasses over 9,000+ private- and government-owned backflow prevention assemblies across the island.

The CCCS also reviews constructions plans for cross-connection control and backflow prevention requirements, conducts cross-connection control inspections of backflow prevention assembly installations, cross-connection control surveys, and addresses any questions or concerns the public may have regarding backflow prevention or cross-connection controls. 

BWS Cross-Connection Control Section
- Phone: (808) 748-5470
- Email: cccs@hbws.org
- Fax: (808) 550-5550


Backflow Prevention Assembly Tester Training

BWS has suspended offering the backflow prevention assembly tester training course.

  • If you are interested in becoming a certified backflow prevention assembly tester and want to sign up for a 5-day training class, please call the PAMCAH Training Workshop at (808) 456-0585.
  • For certified backflow prevention assembly testers who need to be re-certified, please call the PAMCAH Training Workshop at (808) 456-0585, or you can be re-certified by the American Backflow Prevention Association (ABPA).


Updated: 04/03/2024