first real flush toilets were probably from 26th century BC en.wikipedia.org/wiki/Flush_toilet The Knossos palace on Crete (1700BC) had flush toilets (and 3 sep

first real flush toilets were probably from 26th century BC en.wikipedia.org/wiki/Flush_toilet The Knossos palace on Crete (1700BC) had flush toilets (and 3 separate systems for managing water) en.wikipedia.org/wiki/Knossos