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Industrial wastewater operator certification
Exam application & instructions
Getting started
Industrial/commercial wastewater classifications are associated with the waste treatment occurring at the facility as Physical (A), Chemical (B), and/or Biological (C). Sub-categories for classifications are identified as Level 1, 2, or 3 and those levels correspond with the amount of education required for that classification. Education and experience requirements for each of the classifications are further described in the Industrial/Commercial Certification Practices document.
Industrial/commercial wastewater certification examinations are offered twice a year in August and February in four locations throughout the state.
Current Submission Timeline
- Application submission is: Closed
- Application deadline: January 13, 2026
Application submittal
Application submittals will be sent to EGLE WRD Operator Certification Unit. All applicants must attach the signed application, for Level 3 only submit all education transcripts, and certificates to be considered complete.
Always download the exam application from this page. Do not use an old application.
ADA Accommodations are available. Please explain thoroughly in application.
Exam notification letters are mailed 2-3 weeks before the exam. Please read your acceptance letter to verify the exam location and the exam time.
Please submit your application as soon as possible within the application timeline. The earlier you submit your application, the more likely it is that staff can provide adequate feedback if you are missing information.
An incomplete application may be denied at any point during the application cycle; however, it is much more likely for staff to review and retrieve missing information to complete your application the earlier you apply.
- Operators may find the examination guide and the list of sources of reference material helpful in preparing for the certification exams.
Download the Application and Instructions
Certification application fees
- Level 1 and 2 Exams - $35.00 per exam
- Level 3 Exams - $40.00 per exam
Exam results
The Board of Examiners must provide recommendation to the Department on the issuance or non-issuance of certificates, so a Board meeting must be held before results are released. The Board typically meets approximately one month following each exam date, and results are also usually mailed the same week as the Board meeting. Operators can reasonably expect their results in the mail approximately 6-8 weeks following an exam date.