Just as fats, oils, and grease (FOG) clog our arteries, they also clog pipes both inside your home and outside in our sewer system. Once the grease is in the drain, it sticks to the sides of sewer pipes, both on your property and in the public sewer system. Over time, the grease will build up and block the pipes. Even if you don’t experience back-ups, you could be impacting your neighbors downstream, leading to costly repairs and cleanups or sewer overflows that damage the system and pollute our waterways.

FOG accumulation in the public sewer system can cause blockages in the sewer pipes, which then keeps the pipes from functioning properly. Blocked sewer pipes can cause sewer backups into homes and/or streets, costly cleaning and maintenance, and water pollution.

The Metropolitan St. Louis Sewer District (MSD) estimates that about 15 percent of blockages in its public sewer system are caused by FOG. What can you do to help? The easiest way is to keep fats, oils, and grease out of the public sewer system:

  • Never pour grease down sink drains, into toilets, or down the sewer system.
  • Encourage friends and neighbors to keep FOG out of the sewer system.
  • Scrape visible FOG and food scraps from plates, pots, and utensils into the trash.
  • Pour fats, oils, and grease into an empty pet food, vegetable, or coffee can or jar. Allow the grease to cool and solidify. Throw the container in the trash. COOL IT, CAN IT, & TRASH IT.
  • If you would like a free FOG lid to cover the can, they are available at your local municipality or at MSD’s Administrative Offices, 2350 Market Street, St. Louis, MO 63103.

FOG links