Fats, oils, and grease (or FOG) are waste products of cooking and meat preparation. These are normally found in fats from meat, oil, shortening, margarine, butter, dairy products, and sauces.
These FOG products build up in sewer pipes and result in blockages. Large blockages eventually cause sewers to overflow and basements to back up.
The Federal Environmental Protection Agency (EPA), along with WSSC, require food establishments to control their FOG waste with properly designed grease abatement systems to ensure proper drainage and treatment of municipal wastewater. This will reduce and eliminate sewage spills and backups, and help food service establishments avoid being shut down and/or receiving hefty fines.