House Bill 2133, also known as the "Tennessee Secondary Aluminum Waste Management Act," amends the Tennessee Code Annotated by adding a new part to Title 68, Chapter 211. This new part defines key terms such as "Department" (referring to the department of environment and conservation) and "Secondary aluminum waste," which includes various waste materials generated from secondary aluminum smelting operations. The bill establishes regulations prohibiting the commingling of municipal solid waste with secondary aluminum waste in landfills and mandates that secondary aluminum waste can only be disposed of in dedicated landfill units that have been specifically permitted for this purpose.

Additionally, the bill outlines the responsibilities of the department to promulgate rules for the permitting and operational standards of dedicated secondary aluminum waste landfill units. These rules must include criteria for protecting human health and the environment, as well as considerations for liner design, leachate control, and monitoring. The act takes effect upon becoming law for the purpose of rule promulgation, while all other provisions will be effective from July 1, 2026, applying to all secondary aluminum waste and municipal solid waste disposed of after that date.