Abstract: A portable waste container discharge system, for use in combination with a toilet, includes a housing; a disinfectant storage chamber formed within the housing; a multi-port valve in selectable fluid communication with the multiport valve in which selectable positioning of the valve will fill the measuring chamber with disinfectant from the storage chamber; an element for suspending a body fluid bag in a vertical, gravity-drain position, the element attached to the housing; and a discharge block in fluid communication with an output of the body fluid bag, the block also in fluid communication with the multi-port valve for fluid communication with the measuring chamber, in which the valve may selectively block fluid communication between the storage chamber and the discharge block, or between the measuring chamber and the discharge block, and selectively enable passage of disinfectant from the measuring chamber to the discharge block, and thereby to the toilet.