Polystyrene Foam Rules: Madison vs Sun Prairie
How do polystyrene foam rules rules compare between Madison, WI and Sun Prairie, WI?
Madison and Sun Prairie have similar restriction levels.
Madison, WI
Dane County
Wisconsin Act 21 (2018), codified at Wis. Stat. §66.0419(2)(a), expanded auxiliary-container preemption to expressly cover polystyrene foam, blocking Madison from banning foam takeout containers, cups, or coolers.
View full Madison rules →Sun Prairie, WI
Dane County
Wisconsin's auxiliary container preemption law in Statute 66.0419 prevents municipalities from banning or restricting expanded polystyrene foam takeout containers, leaving any restriction to state legislation.
View full Sun Prairie rules →Key Facts Comparison
| Fact | Madison | Sun Prairie |
|---|---|---|
| Preemption | Wis. Stat. §66.0419 | - |
| Expanded by | 2017 Wis. Act 21 | - |
| City procurement | Allowed | - |
| Local mandate | Prohibited | - |
| - | - |
Highlighted rows indicate differences between cities.
Madison FAQ
Can Madison ban styrofoam takeout boxes?
No. Wis. Stat. §66.0419, expanded by Act 21 in 2018, preempts local regulation of polystyrene foam containers throughout Wisconsin.
Are city events foam-free?
Madison can require compostable foodware at city-sponsored events under its procurement authority. That market-participant role is exempt from the auxiliary-container preemption.
Sun Prairie FAQ
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