The following is a six-part series of not-too-serious slide shows chronicling the evolution of human waste disposal practices - and their possible future.
A Brief (Illustrated) History of Human Waste Disposal
Part 1. Cesspits & Outhouses
Part 2. Toilets & Water Carriage
Part 3. Sewerage
Part 4. Sewage Treatment
Part 5. Wastewater Treatment
Part 6. The Future: Wastewater Reclamation
These slide shows were presented at the venerable Missouri Water and Wastewater Conference in October, 2010.
(MWWC is primarily an organization of water and wastewater plant operators.)