UDC Plumbing Inspector Exam Information

​​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:

Additional training materials relating to this credential may be ordered through Document Sales or by calling (608) 243-2441 or (800) 362-7253.  They are intended to be training guides and may not match the current code.

Product Name
WI Uniform Dwelling Code & Commentary

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.