Formed in October 1991, the Ontario Sewage and Liquid Waste Carriers Association was originally for pumpers and haulers in the Canadian province. In 1998, the group expanded its focus to include installers and the portable sanitation industry, changing its name to OASIS, the Ontario Association of Sewage Industry Services.As OASIS celebrates its 25th anniversary at its annual conference in October, Chris Aitkin is just starting his second year as the group’s president, carrying on the legacy of his family’s business, Rankin’s Septic Tank Pumping and Environment Services. His father, Jim, became involved in the group shortly after its inception and
