Flood prevention and water quality key parts of Mississauga’s first-ever stormwater master plan

Preventing floods, improving water quality and reducing pollution are the cornerstones of Mississauga’s first-ever Stormwater Master Plan, approved this week by City council.

The comprehensive document, entitled “Build Beautiful,” outlines the long-term plan that will be used to refine the City of Mississauga’s stormwater program, stormwater management systems and infrastructure.

Stormwater is the rain and melted snow that flows or runs off properties and roads that then drains along streets, ditches, storm drains and watercourses into Lake Ontario.

“In Mississauga, we’re experiencing heavier rainfall and more severe storms related to climate change. Through the newly approved plan, the City can help address issues facing Mississauga today including flooding, water quality and pollution while working to preserve our environment,” said Sam Rogers, Mississauga’s director of infrastructure planning and engineering services.

City officials say the new master plan builds on the City’s existing stormwater management program and outlines 22 actions with supporting activities and recommendations for managing rainwater in Mississauga.

“Fresh water is a scarce resource and Mississauga is fortunate to be located near the Great Lakes system, one of the largest freshwater resources in the world,” Rogers said. “Managing the city’s stormwater is very important. Rainwater and snowmelt end up in Lake Ontario, which is the city’s drinking water source. Stormwater management is crucial in protecting public safety and health, and works to reduce flood risks, control erosion and maintain water quality in local natural waterways.”

The City manages stormwater by planning, constructing, operating and maintaining stormwater assets such as sewers, catch basins and storm drains within roadways, public easements and other City lands.

This undertaking includes:

• erosion and sediment control
• flood protection projects
• maintenance and repairs to existing infrastructure
• emergency response to flooding, spills and clean-up
• street sweeping
• bylaw enforcement to protect the environment and prevent interference with the operation of the stormwater management system

In carrying out the new stormwater plan, Mississauga will work with partners that include the Region of Peel, Credit Valley Conservation, Toronto Region Conservation Authority, Conservation Halton, and Indigenous Peoples and Nations.