Residential Grease Disposal

Leftover Fats, Oils, and Grease (FOG) products are not to be poured into the drain, dishwasher, garbage disposal, or toilet because once the FOG cools, it will solidify and begin blocking the drain.

Instead, dispose of FOG in your compost or garbage. When FOG is not disposed of properly, it slowly begins to coat the inside of pipes and restrict water flow. Chemicals that claim to dissolve grease only move the problem further down the line and are not allowed per the Palo Alto Sewer Use Ordinance.

To learn about how to handle FOG at home, please see our handout:

Residential FOG Best Management Practices

Learn More

• Wastewater at Stanford
• Pollution Prevention at Stanford