Cut the Grease! No FOG down the Drain.

When poured down the drain, FOG can build up in pipes and equipment and cause significant problems in the sewer system and wastewater treatment plants. Problems such as sewer line blockages that cause sewer overflows are the result of improper disposal of FOG. Sewer overflows cause environmental health hazards and property damage and lead to increased operation and maintenance costs which show up as higher sewer bills for you the customer. FOG that reaches the wastewater treatment plant affects the Biological Nutrient Removal process, increases Biological Oxygen Demand, and increases maintenance for removal.

What is FOG?

FOG refers to Fats, Oil, and Grease from food preparation and kitchen clean up. FOG is found in such things as:

  • Meat fats (bacon grease, pan drippings, etc.)
  • Food scraps
  • Lard/Shortening
  • Baking goods (uncooked batter and dough)
  • Butter/Margarine
  • Cooking oil
  • Sauces
  • Dairy products

Why should I care about FOG?

Residential households contribute FOG build-up in the sewer lines when grease is washed into the plumbing system, usually through the kitchen sink. FOG build-up must be physically removed from sewer lines by City of Moscow staff. This requires expensive equipment and is a time consuming process. FOG does not always wait until it gets to the city sewer lines before it starts accumulating on pipes. It can be a major contributor to many blockages in private sewer lines. When a blockage occurs within your plumbing system, you are responsible for removing the blockage. Doing so can range from inconvenient and unpleasant to quite expensive if a plumber’s service is required.

What can I do?

The easiest way to solve the grease problem is to keep FOG out of the sewer system in the first place. Follow the easy disposal tips listed below:

  • Never pour grease, fats, or oil down the drain or garbage disposal.
  • Pour FOG into jars, cans, and plastic tubs (Careful, the liquid may be hot!) or "Fat Trapper" container. Let contents cool and solidify. When the container is full, throw away with your trash.
  • Used cooking oil can be taken to the Moscow Recycling Center in sealed containers no larger than 5 gallons.
  • For greasy pans, pour off the grease into a container mentioned above, and use a paper towel to wipe out the remaining grease in the pan prior to washing.
  • Scrape as much of food scraps and residue as possible from plates and cooking utensils into the garbage. A silicon scraper or spatula works great!

For questions or more information regarding FOG, contact Ty Thompson at or 208.883.7111.

Contact Us

We are located at:

Moscow Water Department
201 N. Main Street
Moscow, Idaho  83843
Voice: 208.882.3122
Fax: 208.883.7113