Projects: County Court Bio-Filter Swales

City of Brampton installed its first bio-filter swales along County Court Boulevard as part of planned road resurfacing in 2014

The integrated project was able to access new funding and draw on existing budgets, demonstrating a strategic financing model and interdepartmental coordination.

The primary role of the bio-filter swales is to collect and clean storm water run-off from County Court Boulevard before it enters the Etobicoke Creek.

The County Court SNAP community installs a bio-filter swale

The east and west swales are 70 and 85 metres in length, respectively, and 3 metres wide. Their combined road drainage area is 1658 square metres. Road runoff enters the swales through a series of curb cuts along their length.

The swales feature herb and grass plantings and shredded mulch cover, thereby creating an attractive landscaped feature that also treats road runoff.

TRCA’s Sustainable Technologies Evaluation Program (STEP) team will undertake a two-year monitoring program to evaluate the performance of the project.

They will measure the bio-filter swale’s ability to reduce concentrations and loads of typical stormwater pollutants, and reduce runoff volume and peak flow rates from their road drainage areas.

 the County Court SNAP bioswale project

Funding sources for construction and monitoring include: Tree Canada and TD Friends of the Environment Foundation for the planting; the Ontario Ministry of the Environment and Climate Change and STEP for the monitoring; and the City of Brampton and TRCA’s Partners in Project Green.

Region of Peel provided review of design and Fletcher’s Creek Senior Public School was the official planting partner.


• VIEW the STEP project web page.

• DOWNLOAD the Partners in Project Green case study.