The individuals listed in this directory are registered with Applied Science Technologists and Technicians of British Columbia (ASTTBC) as Registered Onsite Wastewater Practitioners (ROWP) providing authorized services in their respective categories of practice.

• ROWP Planner – performs site and soil assessment, designs the system, certifies the system construction based on oversight of construction, and creates the extensive documentation required by the Regulation.
• ROWP Installer – installs or repairs the system as designed and specified by a ROWP Planner.
• ROWP Maintenance Provider – monitors and maintains the system according to the maintenance plan. Please note:
  The Sewerage System Regulation requirements for Professional supervision of type 3 or systems with daily design flow >9100 L remain in effect for ASTTBC Maintenance Provider certified to provide services for those systems.
• ROWP Private Inspector – inspects and provides conclusions about the performance, condition and capacity of existing systems.
• “Provisional” means the individual is in the process of achieving certification and must therefore work under the supervision of an authorized person. A ROWP (Provisional) does not have the right to possess or use a stamp.

Unless supervised by a Professional, ROWPs must not design, construct or maintain systems using type 3 treatment or systems with daily design flow >9100 L.

For additional information please contact Frauke Bracht at (604) 585-2788, ext. 258 or by e-mail to   techinfo@asttbc.org
Disclaimer: ASTTBC does not endorse or control the information on linked websites external to www.ASTTBC.org
Use of information obtained from external sites does not constitute or imply endorsement, recommendation or preference by ASTTBC.

Please note that the Registry is in random order. You may sort by clicking on the right arrow in column headers, use search field for specifics.

The search field allows key word search. e.g. when searching for a ROWP in your area, you may type in a particular postal code ( Z3Y- three first letters / digits are sufficient to get all ROWP’s in that area), or if you are searching for a specific registration number, you may enter this number (eg. OW000)  in the search field or the name.

The certification categories are:  Planner (PL), Installer (IN), Maintenance Provider (MP), Private Inspector – Residential (PIR), Private Inspector – Commercial (PIC).  Please click on the underlined name to see more information.

Smart Search: Specify your search by using search criteria from the different columns. Exp.: “Island V9J PL IN” creates a search for the region Island Health, all Postal Code starting with V9J, all Planners and Installers.

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