Image of antifreeze

F.A.Q. Antifreeze

The MCMUA operates one of NJ's most comprehensive household hazardous waste (HHW) programs. This F.A.Q. page and information on hazardous materials is intended as a guide about HHW materials as well as the MCMUA's HHW program. This information is a general guide and does not constitute official rule, regulation or law.


  • Toxic to small children and may be deadly to animals attracted by its sweet taste.
  • Spent antifreeze may contain metals from the engine (lead, zinc, copper).
  • Can disturb the biological action of sewage treatment and septic systems.


  • Collect and store spent antifreeze in sealed, labeled, plastic or metal container, away from heat sources, children and pets.
  • Never store in a beverage container; original container is best.
  • Clean up spills with absorbent (kitty litter, shredded newspaper, vermiculite, rags, etc.); bag waste materials and discard in the trash. Flush soiled area with water.
  • Do not mix with oil.
  • Do not dispose down the drain or in storm drains.
  • Do not dispose of in the trash: liquid wastes can leak in a trash truck.

MCMUA's Facility Database

Management Options

  • Unused Antifreeze - Antifreeze does not go bad. Donate to a friend who can use it, a mechanic or school auto shop.
  • Spent Antifreeze
    • Take to community recycling center, if available. A state contract for antifreeze collection is available for municipalities and public sector agencies
    • Take to service station or repair garage that accepts spent antifreeze.
    • If recycling option is not available, take to next household hazardous waste collection day or a commercial hazardous waste facility.
    • Note: More environmentally-friendly propylene glycol may contain the same pollutants after use and should be disposed as suggested above.
  • Empty Containers - Dispose of these in the trash.