A cat waste management system including a litter-free waste management unit including a urine isolation container, a urine drainage receiver positioned on an inside bottom portion of the urine isolation container in static, gravitational positioning, a urine separation container, a urine collection tray having a drainage port and a separator ring in position, surrounding the drainage port, a urine drainage system, and a filter medium tray containing a filter-medium which is supported by the urine drainage receiver. All components of the litter-free waste management unit are stackable vertically. The urine drainage receiver provides perimeter support of the filter medium tray positioned above the urine drainage receiver. The litter-free waste management unit utilizes gravity to direct liquid excreta through the litter-free waste management unit. The filter medium is configured to allow liquid excreta to pass therethrough while permitting solid excreta from passing therethrough.
