Knoxville cannot ban polystyrene foam containers used for takeout food or beverages. Tennessee auxiliary container preemption blocks any local prohibition, fee, or mandatory alternative for foam packaging.
Polystyrene foam clamshells, cups, and trays fall within the auxiliary container definition in TCA 68-211-1101, enacted in 2019. The statute bars Knoxville and Knox County from prohibiting, taxing, or imposing alternative-material mandates on these items. The city has cited polystyrene reduction goals in its Climate Action Plan, but implementation is limited to municipal procurement standards, voluntary partnerships with restaurants, and education through the Office of Sustainability. The University of Tennessee campus, as a state entity, has independently shifted away from foam in dining services. Regional groups occasionally lobby the legislature for repeal, but no foam ban currently exists or could be enforced.
There are no consumer penalties because no ban exists. Any city ordinance attempting to restrict foam packaging would be unenforceable and subject to challenge under TCA 68-211-1101.
See how Knoxville's polystyrene foam rules rules stack up against other locations.
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