The portable toilet, a self-contained, freestanding unit for human waste disposal, emerged from the needs of wartime shipbuilding in the 1940s. These early units, constructed from wood or metal, offered a more efficient and sanitary alternative to traditional latrines on busy construction sites.
The development of these units significantly improved worker hygiene and productivity, particularly in environments where fixed restroom facilities were unavailable or impractical. This innovation addressed a critical sanitation challenge, contributing to improved worker health and overall site efficiency in industries beyond shipbuilding. Their portability also made them valuable for temporary events and disaster relief efforts.