Fats, oils, and greases in your kitchen

Fats, oils, and greases (FOG) can build up in sewer pipes and your plumbing, clog your drains and put your home at risk of sewage back-ups. The FOG builds up in wastewater treatment infrastructure too, causing equipment to break down.

Grease is often poured down the sink as a warm liquid. As the liquid cools, grease solidifies and causes build-up inside the pipes to restrict the flow of wastewater. The consequences can be:

  • Raw sewage backing up into your home
  • An unpleasant and costly clean-up at the homeowner’s expense
  • Damage to the environment if wastewater overflows into parks, yards, streets, and local waterways
  • Health and safety risks (including for example, hepatitis, bacterial infections, hypodermic needles, and slips and falls) for both the individuals cleaning up sewage, as well as wastewater treatment operators

Each year, considerable resources are spent cleaning grease-clogged pipes and equipment throughout the municipal wastewater treatment system.

Sources of fats, oils and greases

Meats, sauces, gravies, salad dressings, deep fried dishes, dairy products, soups, chili, pastas, pastries, butter and margarine are all foods that contain fats, oils, and greases.

Grease is a common by-product of cooking and is the term used for animal fats and vegetable oils. It can be found in all of the following and more:

  • Meat fats
  • Lard
  • Cooking oil
  • Butter and margarine
  • Shortening
  • Food scraps
  • Baking goods
  • Sauces
  • Dairy products
  • Soups
  • Chili
  • Pastas

The Do’s and Don’ts of proper FOG disposal

  • DO scrape grease and food scraps from plates, pots, pans, utensils, grills, and cooking surfaces and place them in your Green Bin.
  • DO wipe out greasy pots, pans, and utensils with paper towel before putting them into the sink. Soiled paper towels can be disposed of in your Green Bin.
  • DO place grease and food scraps into your Green Bin. Pour grease, fat, or lard into a clean juice carton with the top cut off. Let the material solidify and then place in your Green Bin.
  • DO use a strainer in the sink to catch food scraps and other solids.
  • DO inform family members, friends, and neighbours about the problem with FOG in the sewer system and how to keep it out.
  • DO learn about proper waste disposal, using the City of Kingston’s terrific online tool: 
    Waste Sorting Look-up.
  • DO NOT pour grease down the sink or into the toilet.
  • DO NOT rinse grease down the sink.

    Hot water is not the solution. Once the grease and water cool, the grease deposits onto the sides of the sewer lateral or municipal sewer pipe, blocking them over time.

  • DO NOT use cloth towels or rags to wipe off plates or clean greasy dishware. When the towels are washed, the grease ends up in the sewer.

pouring oil or grease into a juice box for the Green Bin

Divert fats, oils, and greases

your Green Bin

Use your Green Bin

fats, oils, or greases down drains or toilets cause problems!

Avoid this and other complications!