Even though the ingredients are not hazardous, used antifreeze may become contaminated with lead or hazardous solvents at levels that would make the used antifreeze hazardous. If used antifreeze is not recycled, it must be tested to determine if it is a hazardous waste.

  • recycle your antifreeze through a recycling service or with on-site equipment
  • make a waste determination of all antifreeze before disposal
  • keep antifreeze in two separate, closed containers: one marked "'USED ANTIFREEZE ONLY", and one marked "RECONDITIONED or RECYCLED ANTIFREEZE"
  • use dedicated antifreeze collection equipment, including collection funnels, transfer pans or buckets, and well maintained storage containers
  • keep antifreeze containers closed at all times except when emptying or filling
  • keep antifreeze containers protected from the elements
  • keep accurate records of used antifreeze shipments and filter management for 3 years
  • use/purchase antifreeze with the longest life
  • mix waste antifreeze with any other waste
  • mix radiator flush chemicals with used antifreeze. Dispose of it separately.
  • dispose of antifreeze on the ground, in a storm drain, septic tank or dry well


For more information concerning the proper handling of antifreeze, contact the Florida Department of Environmental Protection, Bureau of Solid and Hazardous Waste ( or the Hinkley Center for Solid and Hazardous Waste Management ( This information is offered only as guidance. Specific requirements may vary with individual processes and/or businesses.