A toilet assembly is provided having a bowl assembly having an inlet, a wastewater outlet, and a water supply inlet having an inlet valve. The assembly includes an adjustable metering valve in fluid communication with the inlet valve and the inlet of the bowl assembly, and an accumulator in fluid communication with the inlet valve and disposed upstream of the adjustable metering valve. A fragmentation passage is provided in fluid communication with the wastewater outlet and disposed downstream of the wastewater outlet. The assembly includes jet assembly having an inlet in fluid communication with the inlet valve, and an outlet disposed upstream of the fragmentation passage. The water supply inlet is structured to deliver a quantity of water through the inlet of the bowl assembly, and a quantity of water to the jet assembly to remove wastewater from the fragmentation passage.