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.

***Please note that the BNQ website is currently experiencing problems and it is not possible to view the annex related to a certificate. Please contact the relevant secretariat to receive the annex by email.

Certification of products, processes and services: secretariat.certification@bnq.qc.ca

Management Systems Certification: bnqes@bnq.qc.ca


CAN/BNQ 3680-600 Certified Treatment Technologies:

Premier Tech Aqua

Waterloo Biofilter



Bionest Technologies Inc.

BMEC Certified Treatment Technologies

Enviro-Septic BMEC Authorization 2018

Eljen GSF System

Infiltrator ATL

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.