Operator Certification

The Operator Certification Unit trains and licenses all people working in water and wastewater plants, operating groundwater systems, and sewage lagoons in the state. This ensures they have training to properly treat and monitor the outgoing product of the facility to protect human health and the environment.

Applications & Forms

Printable Study Guides

Exam Fees

  • Exam Application fee $62
  • Temporary Application fee $62
  • Non-Certified Helper Application fee $23
  • Renewal fee $46

Frequently Asked Questions

Checklist for Completing Exam Applications

To avoid having your exam application returned and to help the review process run smoothly, follow this checklist:

  • Use the current exam application (12/12, or later)
  • Complete the entire form, even if you are applying to retake an exam
  • Indicate which exam session you wish to attend and which exam you wish to take
  • List all of your experience and all of your approved training classes, include all training you will attend before the exam session
  • Bring documentation to the exam session to verify class attendance (if you attend a class after submitting your application)
  • Sign and date the application
  • Include $62 for each exam
  • Make sure the application is postmarked no later than 21 days prior to the first day of class before exam


Oklahoma Dept. of Environmental Quality
Financial & Human Resources
PO Box 2036
Oklahoma City, OK 73101-2036


Oklahoma Dept of Environmental Quality
Operator Certification
PO Box 1677
Oklahoma City, OK 73101-1677

Operator Certification Contacts
General Questions

(405) 702-8228

Training & Training Approval

Gretchen Anderson
(405) 702-8130

Exams & Application Approvals

Ashley Sebree Rush
(405) 702-8114

Allison Hernandez
(405) 702-8176

Hire & Departure

Elizabeth Davis
(405) 702-8280