Environmental Protection Agency: Virtual Water Plant Tour
An interactive tour of a real water-treatment plant.
Guadalupe-Blanco River Authority: Wastewater Treatment Plant
A clickable tour and descriptions of the many parts of a wastewater-treatment plant.
In Chemical Heritage Magazine
Pipe Dreams: America’s Fluoride Controversy
On the afternoon of January 25, 1945, municipal workers at the Grand Rapids, Michigan, waterworks began feeding powdered sodium fluoride into a system of basins, hoppers, filters, and tanks.