Classic and early modern Mesoamerica

History of water supply, sanitation and drainage.
Wastewater Reuse Activities
Mesopotamia
Ancient China
Roman Empire
Islamic World
Medieval Europe
Classic and early modern Mesoamerica
Sewage farms for disposal and irrigation
Modern age
Bristol, Liverpool, London and other cities, UK

The Classic Maya used water filters, made from limestone that was formed into a cylinder, within their households and had advanced below surface aqueducts and flushing lavatories. The water filters that they created are alarmingly similar to the ceramic filters that we use today.

Sewage farms for disposal and irrigation