A cistern body 74 for a toilet system comprising a water reservoir 134 and a water pump 82, the water pump being configured to pump water out of a water outlet from the cistern body. The cistern body may comprise an air pump 102 operable to pump air out of an air outlet (108, figure 3A) from the cistern body. Also disclosed is a water inlet valve for a toilet water reservoir, the valve including a shroud (116a, figure 12A) for deflecting incoming water flow from a water surface of the water reservoir in order to prohibit splashing of the valve. In another embodiment, there is an overflow arrangement comprising an overflow weir wall locatable by a water reservoir of a toilet cistern as defined in claim 12. Also disclosed is a water inlet valve for a toilet water reservoir, the valve including a shroud for deflecting incoming water flow from a water surface of the water reservoir in order to prohibit splashing of the valve.
