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Drinking water operator certification exam applications

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Environment, Great Lakes, and Energy

Drinking water operator certification exam applications

Classifications and Licenses

Exams

Exam Date(s)

Postmark Deadline(s)

F 1-2-3-4, D 1-2-3-4, and S 1-2-3-4
(Paying by check or credit card)

May 6, 2026

November 4, 2026

March 6, 2026

September 4, 2026

S-5, D-5, and F-5
(Paying by check)

May 6, 2026

November 4, 2026

March 6, 2026

September 4, 2026

S-5, D-5, and F-5
(Paying by credit card)

May 6, 2026

November 4, 2026

April 6, 2026

October 4, 2026

F - Complete Treatment, Levels 1-5
D - Limited Treatment, Levels 1-5
S - Distribution, Levels 1-5

The U.S. Postal Service postmark or a postmark from an independent delivery service (U.P.S., Federal Express, DHL, etc...) will be used to verify that the application has met the deadline for submission.  Postmarks by private meter stamps (such as Pitney Bowes) cannot be used as proof of meeting the deadline.

These forms and their contents are subject to the Freedom of Information Act and may be released to the public.

Common issues with exam applications

  • Typing the email address incorrectly.
  • Failing to sign your application(s). If you do not sign your application, your application will be denied.
  • Leaving the job duties box and percentage blank. 
  • Missing a supervisor signature on job experience. If you are required to submit experience it must signed by your supervisor.
  • Applications submitted late will be automatically denied and no refund will be given.

Location preference for examination is on a first come, first serve basis, therefore, emailing the application will get it to us much faster.  

Drinking Water Training and Certification continually updates the Training Calendar for Drinking Water Courses taught by EGLE. There is a combination of webinars and in-person trainings available throughout the year. Continue to check for an updated calendar as we will be adding new courses as the year goes on.

Applications

  • Exam study materials

    Practice exams and study guide materials can be found under each general tab for our four license types: Complete Treatment (F), Limited Treatment (D), and Distribution (S) Levels 1-4, and Noncommunity F, D, and S Level 5.

Safe Drinking Water Act 399

All of the classifications and criteria are explained in the rules and statutes of the Safe Drinking Water Act 399.

R 325.11901 - 325.11918

Supplying Water to the Public - Part 19 Examination and Certification of Operators