union sanitary district > homeowner information >  

Welcome to!

Tips for proper disposal of fats, oils and grease (FOG)

NEVER Pour Grease Down Your Household Drains or Into Storm Drains!

Fats, oils and grease can create blockages in sewer lines that can cause backups into your home with expensive cleanup costs. Overflows may cause grease to enter our creeks and San Francisco Bay, harming wildlife and the environment. Grease poured into gutters or storm drains flows directly to local waterways without treatment.

  • Never pour fats oils or grease down your household drains, even with   hot water or soap.
  • FOG (fats, oils, and grease) should never be poured into storm drains. Storm drains lead into our creeks and ultimately, the Bay.
  • Recycle large amounts of grease or cooking oil (including from deep fryers), and bring to the Republic Services Customer Service Center. Contact Republic Services at (510) 657-3500.
  • Garbage disposals do not help to remove FOG.
  • Let it cool down, then pour small amounts of cooking oils and grease into a soup or pet food can lined with absorbent paper and discard in your trash.
  • Dispose of solidified grease in your trash.
  • To report sewer problems in your neighborhood, please call USD at (510) 477-7500, 24 hours a day. Wastewater backups require immediate attention.

During the holidays, FOG can cause big problems for homeowners. There are many obvious sources, such as turkey fryer oil. FOG can be found in most kitchens and food service establishments, and includes: meats, sauces, gravies, salad dressings, deep-fried foods, cookies, pastries, cheese and butter. By following the same simple steps for FOG removal year-round, you can avoid costly and messy sewer backups during the holidays.



Republic Services (510) 657-3500

USD (510) 477-7500