A leveling system for a containment unit is disclosed. This leveling system includes at least one and typically multiple leveling elements, each of which are adjustably attached to a surface of the containment unit. An adjustment mechanism is in communication with the leveling elements for displacing the leveling element or elements in a substantially vertical direction. The leveling system also includes a level measurement mechanism attached to a surface of the containment unit for indicating a containment unit horizontal planar position or indicating when the containment unit is “level.” A containment unit is also disclosed.