Exam Applications and Study Guides


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


Exam Date(s)

Postmark Deadline(s)

 F 1-2-3-4, D 1-2-3-4, and S 1-2-3-4

May 3, 2017

November 1, 2017

March 3, 2017

September 1, 2017

 S-5, D-5, and F-5 (Paying by check)

May 3, 2017

November 1, 2017

March 3, 2017

September 1, 2017

 S-5, D-5, and F-5 (Paying by Credit Card)

May 3, 2017

November 1, 2017

April 3, 2017

October 1, 2017


The U.S. Postal Service postmark or a postmark from an independent delivery service (U.P.S., Federal Express) 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.

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 



Type I:       
"F" Complete Treatment: Levels 1-4   PDF Word   Study Guide 
"D" Limited Treatment: Levels 1-4   PDF Word   Study Guide 
"S" Distribution: Levels 1-4  PDF Word   Study Guide 
Type II:       
Level 5 Certification  PDF Word   Study Guide  
Level 5 Certification Requirements  PDF    


Below is the new Math Formula Sheet that will be provided on every single exam as part of the booklet.  It is being provided to you as a study guide and resource.  Please do not bring a copy of this to the exam since it is being provided on the examination itself.  This sheet was created in conjunction with the Advisory Board of Examiners and the Subject Matter Experts in every exam category.

For operators and their supervisors: Math Formula Sheet