A gravity type water pipe providing enhanced cooling of smoke generated thereby. The water pipe comprises a water reservoir and a movable assembly which in operation is raised and lowered in water contained in the water reservoir. The movable assembly may comprise a vertical conduit, a bowl for containing ignited substances, and an enlarged chamber below the vertical conduit. A supplementary cooling chamber for containing ice is contained in the smoke flow path of the movable assembly. The supplementary cooling chamber is adapted to receive ice and may for example have a grate for entrapping ice cubes place in the supplementary cooling chamber. The supplementary cooling chamber may be a component unto itself which is removable from the movable assembly.