Public Works and Engineering
Fats, Oils and Grease in Our Sewer System
Fats, Oils, and Grease in our sewers:

Most people know that fat and grease are not good for their health. Did you know that fats, oils and grease (FOG) is a problem for your plumbing and for the public sewers, as well?
- When warm in the sink, FOG floats.
- When cool in the sewer pipe, FOG is solid.
- In plumbing and sewer pipes, FOG can block the normal flow of sewage in the pipe
- Running hot tap water will not float grease in the sewer pipe!, That's because the water cools as it flows down the pipe, so that the grease remains solid.