OHA Drinking Water Services
Certification List

Table is loading - please wait...
Getting Started
This page lists all OHA-certified operators, cross connection specialists, and backflow assembly testers. To get started, choose one of the viewing options below. You can reset the view to see all or part of the data set at any time.

Where would you like to start?

Looking for the old Operators for Hire list?
Select the D/T Operators option above.