Waterloo Biofilter® designs and manufactures wastewater treatment systems ideal for residential, communal and commercial sites. Our decentralized turnkey systems are installed across Canada, the US and Korea, treating wastewater on-site from individual houses, trailer parks, golf courses, restaurants, subdivisions, remote work camps, resorts and small municipalities with the most passive means available today. The lack of generation of aerobic sludge, small space, and low maintenance and energy requirements are distinct advantages over other aerobic systems. Third-party testing over 14 years has shown consistent removal rates of 90-95% BOD, 90-97% TSS, 99% fecal coliform and up to 60% TN.