Patent attributes
A portable lavatory, which is easily loaded into a freight box of a truck and is maintained in a stable loaded state in the freight box during transportation, is disclosed. In the portable lavatory (10), the capacities of both a fresh water tank (20) and a foul water tank (30) of a tank unit (12) are altered in inverse proportion to each other. The tank unit (12), integrated with a lower end of a lavatory facility unit (11), has a width and length shorter than those of the lavatory facility unit, thus being stepped inward from the lower end of the lavatory facility unit. The fresh water tank (20) and the foul water tank (30) are assembled with each other at flanged open ends thereof into a single structure, with a variable tank (40) provided in a junction part between the two tanks.