A toilet includes a bowl portion, a rim portion, and a reservoir. The bowl portion defines a bowl cavity that is in fluid connection with a trapway. The bowl cavity is configured to hold a volume of water to provide a water seal for the trapway. The rim portion extends about an upper portion of the bowl portion. The rim portion defines an internal rim cavity that extends about an upper portion of the rim portion and a plurality of apertures that extend from the internal rim cavity and through a sidewall of the rim portion to direct water from the internal rim cavity to the bowl cavity. The reservoir is in fluid communication with the internal rim cavity and the bowl cavity and configured to receive a supply of pressurized water from a water source and direct at least a portion of the pressurized water to the internal rim cavity.