We don’t seem to know, for, as Marc van de Mieroop points out: ‘ Archaeological evidence of latrines in houses is lacking, and public toilets do not seem to hаvе existed either’ (The Ancient Mesopotamian City, p. 159). Out in the village-communes that would not have been a great problem, but in what are often called ‘cities’, it was a different matter entirely. In the rivers and canals? But that was also drinking water.