We are a Provincial Association established in 1991
O.A.S.I.S. was established in 1991 to represent Septic Pumper, Installers, Portable Toilet Suppliers, Manufacturers and Biosolid Professionals in the land application industry. We are dedicated to working with various levels of government, associations and those in related fields to improve and conform to regulations and guidelines pertaining to the sustainability of the environment in the Province of Ontario.
Presently, we have over 150 member companies who work in the Province of Ontario, throughout Canada and North America.