Abstract: A waste liquid handling system especially suited for installation in the cab of a truck cabin. The system includes a removable urine collection cup, a waste holding tank, and a wash water reservoir having a battery powered pump. These three principal components may be contained within a single cabinet and may be individually removable therefrom. The cabinet may have a collection cup compartment from which the collection cup may emptied by engaging a drain valve. The collection cup may be washed by installing a removable cap which may be connected to the wash water reservoir. The system may include a vent fan and a cabinet light. A bed may be located in the cabinet above the holding tank and the wash water reservoir. Hoses used in the system may utilize quick connect fittings.