Abstract: A portable, self-contained bowel lavage system for supporting a person in a sitting or squatting position during an enema, comprising a housing (21) having a seat sloping to an opening (24) over a toilet (25) and a splash-guard enclosure (23) upon which the buttocks are pressed to direct effluent into the toilet receptacle. The housing (21) is supported by legs (27) and has a seatback (26) to support a user, both of which may be removed for storage or transport. Water is supplied from a water source to a water handling system, most of which is housed within the waterproof housing (21). Water pressure is controlled by a fixed flow-control valve (52). The device has two water passageways, a first communicating with a sprayer (49) for clean-up and a second communicating through an on/off valve (50), a water filter (53), and a back-flow check-valve (55) to a rectal nozzle (56) extending from the splash-guard enclosure (23).