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Grease and the Sewer System
Grease FAQ
Fats, Oils and Grease Ordinance
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Grease and the Sewer System
 Sanitary sewer overflows (SSOs) can be caused by anything capable of obstructing the flow of wastewater in a sewer. The buildup of solids, fats, oils and grease in the wastewater collection system is a major culprit.
When an obstruction blocks the flow of wastewater within a pipe, the wastewater may back up and overflow through a manhole, cleanout, toilet, sink or drain. This overflowing wastewater may make its way into the environment and into your house or business.
Here are the not-so-pretty risks:
- SSOs contain everything that goes down your drain – and we mean EVERYTHING!
- Additionally, SSOs can carry harmful bacteria, viruses and various diseases.
- Children, the elderly and people with compromised immune systems face added risks.
- In water bodies, the environmental impacts of sewage include: hypoxia, algal blooms, habitat degradation, floating debris and aquatic species die-offs.
Traditionally, grease is thought of as oil used for frying and bacon grease, but grease and oils can be found in other food items that may surprise you such as:
- Baked goods
- Butter
- Chicken skins
- Creams and sauces
- Frosting
- Ice cream
- Milk
- Salad dressing
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