Solid Waste Disposal - As enacted, creates the advisory task force on solid waste to examine and review issues related to solid waste; authorizes the department of environment and conservation to accept voluntary contributions, and to apply for grants, from private companies for grants for recycling infrastructure, recycling projects, and composting. - Amends TCA Title 4; Title 5; Title 6; Title 7; Title 8; Title 11; Title 13; Title 20; Title 28; Title 39; Title 49; Title 54; Title 55; Title 59; Title 62; Title 64; Title 65; Title 66; Title 67; Title 68 and Title 69.

HB 667 creates a state advisory task force to examine solid waste management issues and authorizes Tennessee's Department of Environment and Conservation to accept private company donations and apply for grants for recycling infrastructure, projects, and composting. The bill requires the department to publish its findings online and amends multiple environmental codes to support these provisions. It directly affects the state department, private waste management companies, and communities managing recycling efforts. The law takes effect July 1, 2025, after becoming Public Chapter 429.