FOG
Fats, Oils & Grease
You may not think twice about rinsing a greasy pan, pouring leftover cooking oil down the sink, or washing dishes after a big meal. But what really happens when fats, oils and grease (FOG) go down the drain?
FOG can cause serious problems for both your home's plumbing and the community's wastewater system. This page will take you behind the scenes to show what happens after FOG enters the drain, identify common sources, and explain how you can help protect the entire sewer system.
What Really Happens When FOG Goes Down the Drain?
When fats, oils and grease are warm, they may look harmless as they flow down the drain. But as they cool, they can solidify and stick to the inside of pipes.
Over time, FOG can build up layer by layer, restricting the flow of wastewater and eventually causing clogs. These blockages can lead to backups in homes, sewer overflows and costly repairs.
The drain isn't the end of the line. Everything that goes down your sink enters a larger wastewater system and FOG can cause problems at every step of its journey to our treatment facility.
Behind the Scenes: FOG in Our Sewer System
FOG doesn't just affect the pipes inside your home.
Once it enters the sewer system, grease can collect inside sewer mains, pumps and lift stations. Our team regularly encounters the effects of FOG throughout the wastewater system, including grease buildup that can restrict flow and interfere with equipment.
Common Sources of FOG
FOG is especially common during the holiday season. Common sources include:
- Cooking oils and frying oil
- Butter and margarine
- Meat fats and bacon grease
- Turkey and other pan drippings
- Gravy and cream-based sauces
- Greasy leftovers and food scraps
The Right Way to Dispose of FOG
The good news? Preventing FOG problems is simple!
Never pour fats, oils or grease down the sink or toilet. Instead:
- Let it cool.
- Pour or scrape it into a container.
- Seal the container and place it in the trash.
For smaller amounts of grease, use a paper towel to wipe pots, pans and dishes before washing them.
Keeping FOG out of the drain is one small action that can make a big difference. By properly disposing of fats, oils and grease, you can help prevent clogs, protect your home's plumbing and keep our community's wastewater system flowing smoothly.
