Cracking the DSPS FAQ: What the Code Really Says

In Episode 3, Ryan Boggs dives into the often-overlooked but incredibly useful DSPS Plumbing FAQ documents. These FAQs offer insight into how Wisconsin’s plumbing code is interpreted by the state—but also reveal areas of inconsistency, outdated language, and urgent need for clarification.

Ryan covers:

• Indirect waste air gap sizing and proper receptor piping
• T&P relief valve discharge and drain pan sizing strategies
• Why air admittance valves (AAVs) can't be used on chemical waste systems
• Cross connection control legacy rules vs. code-triggering repairs
• The difference between plumbing code and building code requirements
• Why cross connection rules are the biggest concern in the new code update
• A call to action: Get involved with the Plumbing Code Advisory Committee

This episode emphasizes a critical truth: the DSPS FAQs are tools, not laws—and plumbers need to be fluent in what is code and what isn’t. Especially as the direction of the state code evolves, staying informed and involved is more important than ever.

Sources Referenced in This Episode:

1. DSPS Plumbing Program Page
   https://dsps.wi.gov/Pages/Programs/Plumbing/Default.aspx
2. FAQ – Indirect and Local Waste Piping
   https://dsps.wi.gov/Documents/Programs/Plumbing/FAQIndirectLocalWastePiping.pdf
3. FAQ – Materials and Approved Products
   https://dsps.wi.gov/Documents/Programs/Plumbing/FAQMaterials.pdf
4. FAQ – Inspection and Testing
   https://dsps.wi.gov/Documents/Programs/Plumbing/FAQInspectionTesting.pdf
5. FAQ – Definitions and Interpretations
   https://dsps.wi.gov/Documents/Programs/Plumbing/FAQDefinitions.pdf
6. FAQ – Cross Connection Control
   https://dsps.wi.gov/Documents/Programs/Plumbing/FAQCCC.pdf
7. FAQ – Emergency Fixtures
   https://dsps.wi.gov/Documents/Programs/Plumbing/FAQEmergencyFixtures.pdf

Next Week’s Episode Preview:
Join us in Episode 4 as we break down approved venting systems in Wisconsin—including wet vents, circuit vents, and the do’s and don’ts that commonly confuse both journeymen and inspectors.

Support the show