This figure describes how water can be a liquid waste and a medium for solid wastes in a domestic situation. Liquid wastes include shower water, urine, washing-machine water, and tradewastes and some other industrial processes. Solid wastes (2% of the volume) include human faeces and kitchen waste, which are mixed with water for transport via a flush toilet or kitchen waste macerators. Both liquid and solid wastes carried by water become mixed domestic sewage.