Abstract: A system and method for temporary sanitary disposal of human liquid waste in a building under construction on a level above ground level with a ceiling and prior to the installation of permanent plumbing fixtures. The method comprises the steps of providing one or more temporary urinals on the level, providing at least one holding tank capable of accumulating liquid waste at or below ground level, and providing liquid waste piping between each of the one or more temporary urinals and the at least one holding tank. The method also comprises the steps of introducing a fluidization agent at the one or more temporary urinals, guiding the liquid waste and the fluidization agent from the one or more temporary urinals to the at least one holding tank via the waste piping system, wherein the fluidization agent prevent precipitation of solids from the liquid waste in the waste piping.