Abstract: A novel water filtration apparatus is disclosed having a downstem assembly from which a combustion aerosol or an aerosol is generated. The water filtration apparatus including a rotatable water filtration assembly rotatably mounted about a fixed shaft member and including two chambers generally separated by a divider wall having drain passage formed therein and wherein the rotatable water filtration assembly is normally oriented vertically with one chamber being disposed over the other and wherein said chamber is adapted to contain a volume of liquid that moves from one chamber to the other through the drain passage in response to rotating the rotatable water filtration assembly one-half turn.