What Goes Down Our Kitchen Sink
A Virtual Hands-On Lesson


To schedule a virtual lesson, please contact Ben Lavender at blavender@centralsan.org or (925)-335-7723.


This lesson was crafted to help students understand why some solids are designed to go down the drain and others are not.

The goal of every Central San lesson is to help students think more critically about “what happens to our dirty water after it goes down the drain?

Students can do this lesson themselves at home with the help of a grown up.

Or a teacher can schedule a virtual lesson for their students with one of our educators. In that case, read our Materials Page so everyone can get ready for our lesson!


Want To Watch Some Videos?

Our Fats, Oils, and Grease video is a reminder of how simple actions in the kitchen can have big results in our sewer pipes.

Our Maintaining Our Collections Systems video gives a great overview of all the work it takes to keep over 1500 miles of pipes underground clean and free of blockages.

Our Dispose of Your Cooking Oil Properly video is a quick reminder that oils and water don’t mix, which can make it very hard to clean. If you have lots of used cooking oil, you can actually just bring it directly to us to dispose of! 


Want To See Some Pictures?

Check out our gallery of images of Fats, Oils, and Grease and what happens to our pipes when we put that stuff down the drain.