How Does Wastewater Become Clean?: Pipes, Bacteria and Water Treatment Explained for Kids (How does it work?)

By Erik Michelsen

Where does the water go after you flush?

Join Leo, Maya, Professor Gear, and their tiny water-drop friend Drippy on an amazing journey beneath our streets and inside a wastewater treatment plant

Follow wastewater as it rushes through underground pipes, gets lifted by powerful pumps, and passes through an incredible series of cleaning steps. Discover how tiny bacteria help clean water, why sludge isn't simply waste, and how engineers can turn leftovers into valuable resources.

Young readers will explore:

- How wastewater travels beneath our homes and cities
- How pumps and treatment plants work
- How helpful bacteria clean dirty water
- How sludge is dewatered using powerful machines
- How giant disc dryers remove water using heat
- How pyrolysis can transform dried sludge into biochar, gas, and oil
- How valuable phosphorus can be recovered and reused
- How engineering helps protect water, resources, and our planet

Packed with colorful illustrations, cutaway machines, fun facts, humor, and easy-to-understand explanations, How Does Wastewater Become Clean? turns a question every curious child has asked into an unforgettable engineering adventure.

Perfect for curious kids who love science, machines, engineering, the environment, and discovering how things work.

Flush the toilet, follow Drippy... and discover a hidden world beneath your feet

• Format: Paperback
• Language: English
• ISBN: B0HFS17GS7
• ISBN13: 9798193531746
• Release Date: August 2026
• Publisher: Independently published
• Length: 32 Pages
• Weight: 0.23 lbs.
• Dimensions: 8.5" x 0.1" x 8.5"