Fats, Oils and Grease

  • Fats, oils and grease (FOG) clogs pipes and can cause sewer back-ups. 

    • Residential and Multi-family FOG
    • Business FOG
    Residential and Multi-family FOG

    Stop fats, oils and grease

    Fats, oils and grease (FOG) can cool and solidify in pipes, causing blockages in your home and in the public sewer system. 

    Remember: grease goes in the garbage, not in your sink.

    Common fats, oils and grease 
    • Butter and margarine
    • Cooking oil
    • Food scraps with grease, butter or oil
    • Lard
    • Meat fat, grease and juices, gravy
    • Sauces, butter or oil
    • Shortening
    • Dairy products
     How to dispose grease at home 
    • Never pour grease down sinks or toilets.
    • Put your FOG in a disposable container, freeze it, then place in the trash.
    • Scrape food scraps into your garbage can or compost.
    • Wipe pots and dishes to remove grease before cleaning. 

    What is FOG video

    Freeze the grease, save the drain 

    Order your free FOG kit and help us keep FOG out of sewer lines.

    Call 503-618-2525.

    Business FOG

    Food service establishments (FSE) should have a grease trap or grease interceptor installed to prevent fats, oils and grease from accumulating in the private and public sewer lines. 

    Grease traps and interceptors help prevent grease blockages that cause sewer backups.

    FOG program goals 

    • Reduce FSE grease discharge into the sewer system.
    • Prevent blockages from FOG, which could result in sewage spills.
    • Protect public health and the environment.

    Food service establishment requirements 

    • For new construction or tenant improvement of businesses in the food industry, read the grease interceptor plan requirements.
    • FSEs must pretreat wastewater using grease interceptors to remove FOG before discharging to the public sewer system.
    • FSEs requiring a grease interceptor will be given interceptor size criteria based on Oregon Specialty Plumbing Code.
    • FSEs must implement best practices in their operations to minimize the discharge of FOG.
    • All FSEs must properly maintain and pump out the grease in their interceptors. (Preferred Pumper Program)
    • The City must receive regular pump-out reports.  Non-reporting may result in fines.

     Best practices

    • Dry-wipe dishes to remove excess food and grease.
    • Recycle grease and oil.
    • Don’t pour grease and oil into sinks or floor drains.
    • Scrape solids into the trash before washing.
    • Check grease traps and interceptors often.

    Preferred Pumper Program

    Preferred Pumper companies meet regional municipalities grease pump-out.

    A Preferred Pumper removes FOG from grease traps and interceptors and submits a completed pump-out report to the City.  The City monitors FOG reporting to ensure FOG laden wastewater is not being discharged to the sewer. 

    Preferred Pumper companies and forms

    Contacts us

    For more information about FOG contact Paul Kramer at 503-618-2648 or Paul.Kramer@GreshamOregon.gov.