Fats, oils and grease can clog wastewater collection and treatment systems, causing sewage spills, manhole overflows and/or sewage backups in homes and businesses. Restaurants and other properties with commercial kitchens, auto repair shops and gas stations, and some multifamily properties with large garages can generate enough fats, oils and/or grease to clog sewers.
Grease Traps
Under the King County municipal code, these facilities are required to install and maintain grease prevention devices. These devices protect private sewer lines and the public system by trapping fats, oils and grease before they enter the sewer and cause blockages and backups. They are critical to maintaining a safe and reliable wastewater system and protecting public health from sewer overflows.
Bellevue Utilities offers instructions for installing and maintaining grease traps and interceptors, as well as information about local haulers and recyclers who deal with oils and grease.
Proper disposal method for FOG
- Wipe pots, pans and work areas prior to washing.
- Dispose of food waste directly into the trash.
- Collect waste oil and store for recycling.
- Clean mats inside over a utility sink.
Sources of FOG
- Butter, margarine or shortening.
- Lard/cooking oil or grease from cooked meats
- Cream, sauces or gravy, soup
- Salad dressing, mayonnaise, sour cream
- Peanut butter
- Food Scraps
- Meat
- Food scraps
- Dairy products