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Grand Bend Area Wastewater Treatment Facility

North America’s first ISI Envision®-verified wastewater treatment facility

  • $10M

    Cost Savings

  • 1ST

    Envision® Plant

  • Grand Bend, Ontario

    Grand Bend, Ontario

Protecting Grand Bend's pristine beaches

Malfunctioning private septic systems and effluent discharges from an existing treatment plant were adversely impacting surface and groundwater quality in the community of Grand Bend, an area known for pristine beaches and small town charm on the shores of Lake Huron. In 2008, the Municipalities of Lambton Shores and South Huron retained a firm to design and construct a new tertiary level treatment plant. However, excessive budget overruns forced the municipalities to halt the project and seek new ideas to reduce the expected construction cost of $25M. 

In 2013, the municipalities retained Stantec to redesign the facility. From the outset, we saw value in pursuing the redesign from a new angle. The use of the ISI Envision® framework was proposed during the early stages of the project, and our team sought opportunities to include sustainable features throughout the facility’s design.

Working with municipal staff, we developed a simpler, lower cost solution (BNR with advanced tertiary filtration) that reduced the project’s cost to within the original budget of $15M. Key sustainable features include a constructed wetland to support native wildlife species and further buffer treated effluent, flexible design that makes the facility responsive to changing sewage flows, reduced construction and operational costs, construction within the boundaries of the original facility’s footprint to protect prime farmland, and trails and interpretive signage to encourage community visitors.

This project is the first ISI Envision® verification in Canada, and first wastewater facility to be ISI Envision®-verified in North America. It received the rating system’s Platinum award, the highest level of achievement.

At a Glance

Meet Our Team

Gary Deonarine, Associate

My focus is to promote and adopt a design culture of doing more for the communities that we work and live in, while utilizing sustainable practices.

Olav Natvik, Project Manager

Delivering creative treatment solutions with a triple bottom line—social, environmental, and financial—is my focus.

Haley Sadler, Landscape Architect

We work on complex, multi-disciplinary projects that have a direct impact on the environment and the daily lives of people in our community.

Elvio Zaghi, Principal

My solutions must incorporate technology and design to best protect the natural and recreational assets in our communities.

Gary Deonarine


Olav Natvik

Project Manager

Haley Sadler

Landscape Architect

Elvio Zaghi


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    Work with passionate people who are experts in their field. Our teams love what they do and are driven by how their work makes an impact on the communities they serve.

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