The article entitled “City grilled on water management” in the Tatler dated 18 May 2017 refers.
I wish to query the information given in the article “Where water goes”. According to this article, “a single flush takes 15 litres”, “a three minute shower uses about 30 litres”. I have a 5-minute shower and fill a basin which is just under 10 litres. I decant this into two 5-litre containers, one of which is sufficient to fill my toilet cistern!