Who Can Design Septic Systems in Ontario?
In Ontario, the design of a septic system is done by qualified professionals under the Ontario Building Code regulations. Understanding who exactly can design these systems is crucial for compliance and successful installation.
Qualified Professionals Who Can Design Septic Systems
Licensed Professional Engineers and Architects
These professionals are exempt from additional licensing typical for other designers, meaning they can design septic systems within their expertise. They do not require a Building Code Identification Number (BCIN), but must adhere to their professional qualifications.
Registered Septic System Designers (with BCIN)
Non-engineers or architects must be licensed, obtaining a BCIN by passing specific exams such as “Designer Legal/Process” and “On-Site Sewage Systems,” and registering with the Ministry of Municipal Affairs and Housing.
They should maintain Errors and Omissions insurance, and you can verify their credentials through the Ontario Building Code Practitioners Registry.
Licensed Installers (for Their Own Projects Only)
Installers can design and install septic systems, but they are limited to their own projects. They cannot design for other installers or third parties.
Why You Need a Qualified Designer
Regulatory Compliance: Septic systems must adhere to Part 8 of the Ontario Building Code, focusing on standards for design and construction to safeguard environmental and public health.
Permitting: Only a qualified designer can fulfill the documentation required for a building permit for new or replacement systems.
Liability: Using a registered or professional designer ensures regulatory compliance and minimizes the risk of costly errors or liabilities.
The Design and Permit Process
Site Evaluation: Including soil testing and layout design.
Design Submission: Document preparation for local building authority approval.
Professional Oversight: Execution by engineers or registered designers for customized compliant systems.
How to Find a Qualified Designer
Contact the Ontario On-site Wastewater Association to find professionals in your area.
Check the Ministry of Municipal Affairs and Housing’s online registry for professional licensing.
Look for experience and BCIN registration locally.
Verify their BCIN through the QUARTS database.
Examples of Qualified Providers
Engineering Firms: Headwaters Construction, Gunnell Engineering, RJ Burnside and Associates, Van Harten Surveying.
Construction Companies: Offering design services with licensed engineers or registered designers.
Summary Table: Who Can Design Septic Systems in Ontario
| Role | Conditions/Limitations | Licensing Requirement |
|---|---|---|
| Professional Engineer | Must work within area of qualifications | No BCIN required |
| Architect | Must work within area of qualifcations | No BCIN required |
| Registered Septic Designer | Must pass OBC exams a register with MMAH | BCIN required |
| Licensed Installer | May design only systems they personally install | BCIN required |
Key Takeaway
In Ontario, a professional engineer, architect, registered designer (BCIN), or a licensed installer for their own projects are authorized to design septic systems. Always confirm their credentials to ensure compliance and successful permitting.
