A bath apparatus for bathing a body part, such as feet, includes a bath chamber for containing fluid and receiving the user's feet therein. The bath apparatus includes a heater for heating the bath chamber fluid, and a fluid pump for directing streams of water into the bath chamber to massage the user's feet. A float switch is provided so that the heater and the fluid pump only operate if there is an adequate amount of fluid in the bath chamber. The bath apparatus also includes a selection device disposed within the bath chamber, that is configured to be actuated by the user's feet when they are submerged within the bath chamber fluid. This provides a higher water pressure only after the feet are disposed within the bath chamber, thereby reducing the likelihood that water will be expelled from the bath chamber.