ANSI Z4.3 is the American National Standard for minimum requirements for nonsewered waste-disposal systems, the reference document for how portable toilets are built, sized, placed and serviced. The Portable Sanitation Association International (PSAI) is its secretariat.
The PSAI is the trade association for the portable sanitation industry: rental operators, manufacturers and suppliers. It maintains the ANSI Z4.3 standard, runs training and certification for operators and publishes planning guidance for events.
The modern portable toilet is a post-World War II invention. It emerged from the need for efficient sanitation on construction sites and at large…
