As the largest trade association of its kind in the world, the PSAI is recognized internationally as a credible, authoritative voice providing education and information to promote safety and health. Established in 1971, the PSAI develops and promotes industry standards; serves as a repository of information and resources for operators, suppliers, government entities and the general public; and provides recognition for excellence in the field. Through our efforts, people can access sanitation in places where it is not otherwise available and the environment is a cleaner, safer place. The PSAI represents hundreds of companies in dozens of countries worldwide. - Portable Restroom Operators (PROs) serve the public by providing portable restrooms and related services. - Industry Suppliers provide supplies and services – both directly and indirectly – to portable restroom operators. Suppliers are also sometimes called “Associates.” The organization is structured so that its priorities and its future are always in the hands of its Members.