Find hands-on science activities to help young children understand where clean water comes from, and how it is cleaned at water treatment plants. Post includes instructions to make a homemade water filter and a model water treatment plant.
Earth Day Experiment ~ Can You Undo Water Pollution? In this experiment the kids learned just how hard it is to undo water pollution. a bucket of clean water, some household trash, vegetable oil (to stand for toxic oil spills), tongs, and a strainer.