Abstract: A device for raising and lowering the lid and seat members of a toilet comprises a pair of independent hydraulic systems each operatively associated with one of the toilet members. Each hydraulic system includes a manually operable control valve, a hydraulic cylinder having a water inlet/outlet port disposed at each of its distal ends and means operatively connecting the piston rod of the cylinder to the associated toilet member. Either of the toilet members may be raised by operating the associated hydraulic system such that the control valve directs water to one of the cylinder ports while receiving exhaust water from the other port causing the piston rod to move in a first direction whereby the toilet member is pivotally moved in a counter clockwise direction. The toilet member is lowered by operating the control valve for reversing the cylinder ports receiving and exhausting water causing the piston rod to move in a second direction whereby the toilet member is pivotally moved in a clockwise direction.