Household antifreeze

Households on septic systems should not dispose of antifreeze down the drain. 
  • Even in a diluted form, antifreeze can overwhelm and destroy the bacterial action in your septic system and drain field.
  1. Provide adequate ventilation by opening windows and doors and/or turning on a room fan.
  2. Carefully pour about 1 gallon of diluted antifreeze down the drain, flushing with large amounts of water. Failure to dilute antifreeze may damage pipes or other parts of your plumbing.
  3. Continue disposing in 1-gallon batches until completely gone.
  • Don't mix products. Wait several hours between disposing of different types of products.  
  • The best time to do this is during the working day, when the sewage system is in full use, so this material passes through the municipal sewage system faster.
  • Contact your wastewater treatment facility to make sure it can accept the waste before using this method.