Options for Onsite Residential Wastewater Treatment Technologies

Options for Onsite Residential Wastewater Treatment Technologies

The Ontario Building Code (OBC) implemented changes to the requirements for Treatment Units as outlined in Article, which took effect January 1, 2017. These changes include the removal of Supplementary Standard SB-5 for Approved Treatment Units, and a new reference to the CAN/BNQ 3680-600 standard for certification of treatment units. Follow the links below to find details on the treatment technologies that have been certified under this standard.  In addition to these treatment units, there are other systems that have been approved under the Building Materials Evaluation Commission (BMEC- a regulatory agency under the Ontario Building Code) that are also listed below.


CAN/BNQ 3680-600 Certified Treatment Technologies:

Premier Tech Water and Environment Ltd

Waterloo Biofilter


System O)) / Enviro-Septic

Bionest Technologies Inc.

BMEC Certified Treatment Technologies
A list of authorizations can be found here

System O)) / Enviro-Septic – Nested Pipe Configuration
System O)) / Enviro-Septic – Standard Configuration
Ecoflo – Linear Biofilter EL30 Model Series
Eljen™ GSF System
Infiltrator ATL Systems

Appendix Note A- Other Treatment Units

The Ministry of Municipal Affairs has developed an Appendix Note on Article of the 2012 Building Code. Appendix Notes to the Code are provided for explanatory purposes only and do not form part of the regulation. They are intended to help promote consistent Code enforcement and compliance.