Waterloo Barrier Inc. is a University of Waterloo spin-off company established in 1994 to commercialize the Waterloo Barrier® technology developed within the groundwater research program. The manufacture of the specialty steel sheet piling has been licensed to Canadian Metal Rolling Mills of Cambridge, Ontario, and QA/QC and sealing operations are undertaken by trained and licensed environmental contractors. The Barrier has been installed at more than 50 contaminated sites in North America. Clients include the U.S. Air Force, U.S. Corps of Engineers, public utilities, and major manufacturing & chemical / petrochemical companies.