The exam is open book, and the passing score is 70%. Please visit the
Trades Examination Information page for additional exam information and dates.
The first updates to Wisconsin plumbing code since 2009 will take effect on October 1, 2023, but related licensing exams will not be administered under the new code until November.
The state's Plumbing Code Advisory Committee received input from professional groups to shape these updates, which can now be found in the state administrative code.
While the new plumbing code takes effect October 1, 2023, DSPS is offering a brief grace period for related licensing exams. Exams will be administered under the old code throughout October. However, exams will be administered under the updated code starting in November.
A link to the plain language document is located at the link below:
The updated code language can be found on the Wisconsin Legislature's webpage:
***Please note printed code can be brought into the exam if it is bound together in a 3-ring binder ***
The exam will cover information contained in the following:
You will need a working knowledge of the component manuals for the various POWTS. You will need to bring these to the exam site. These can be purchased through
Document Sales or by calling (608) 243-2441 or (800) 362-7253, and some can be viewed and printed directly from the POWTS Component Manuals site. The general product names are as follows:
|At-Grade Pressure Distribution Component Manual |
Holding Tank Component Manual |
|Single Pass Sand Filter Component Manual|
|In-Ground Soil Absorption Component Manual|
|Mound Component Manual|
|Pressure Distribution Component Manual|
Additional training materials relating to this credential may be ordered through
Document Sales. They are intended to be training guides and may not match the current code.
|Wisconsin POWTS Inspector Handbook|
|Soil & Site Evaluation Handbook|
|Multi-Purpose Piping Systems Design Manual|
Copies of Wisconsin Administrative Codes may be printed from the
Wisconsin State Legislature site or obtained from
Document Sales online or by calling (608) 266-3358. International model codes and accessibility standards can be obtained from the International Code Council (ICC) or by calling (800) 786-4452. When there is a change to Wisconsin codes, exams will cover the new codes three months after the effective date.