Abstract: This toilet system (1) includes a bowl (3) and a flush tank (4), which are molded of ceramic in one piece, the upper edge of the bowl (3) including an inverted channel (14) permitting the distribution of the flushing water over the entire surface of the bowl (3) and communicating with the tank (4) via a supply conduit (16), a distributor device (15) being inserted partly in the supply conduit (16) and partly in the adjacent zone of the channel (14). According to the invention, the supply conduit (16) comprises the bottom (17) of the tank (4) and includes bosses (24-25) separated by at least one throat (30) permitting the installation of the distributor (15) on the wall of the supply conduit (16).