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News Release: May 23, 2019

Region of Peel Council endorses Inflow & Infiltration, Reduction & Mitigation Strategy

The Strategy will help to reduce basement flooding due to sewer backups

Brampton, ON. (May 23, 2019) – Region of Peel Council has endorsed a Wastewater Inflow and Infiltration (I&I), Reduction and Mitigation Strategy. The Strategy will assist in reducing the effects of climate change such as basement flooding, resulting from sewer back-ups. This multi-year strategy will be implemented through careful investigation, followed by prioritizing work in the most vulnerable areas and implementing new construction standards for the sewer system.

Inflow is rain water or snowmelt that enters sewers through direct connections from downspouts, catch basins and foundation drains. Infiltration is water that enters the wastewater collection system through holes and cracks in sewers.

“We have over 3,500 km of pipes and over 55,000 maintenance holes across the Region of Peel. Maintaining this vast sanitary sewer system is complex,” said Andrew Farr, Acting Commissioner of Public Works. “Aging infrastructure and climate change have the biggest flow impacts on our sewer system, added Farr.

Some highlights of Peel’s I&I Strategy include:

  1. Identifying and mitigating issues, including field investigation activities such as:
    • Flow monitoring, close circuit television (CCTV) and maintenance hole inspections
    • Smoke and dye testing
  2. Diverting and storing overflow, including:
    • Diverting sanitary flows around known problem areas by constructing pipelines to divert and/or store excess flows
    • Using real-time control devices to redirect flows from high flow areas to available capacity
  3. Programs for residents, including:
    • Mandatory, fully funded Downspout Disconnection program in focused pilot area
    • Backwater Valve subsidy program

“Our long-term Strategy not only addresses flooding issues region-wide, but will offer resident programs, such as downspout disconnection that will address neighbourhoods with higher risk of flooding from sewer back-ups,” concludes Farr.

For more information, see the full report at

Media Contacts

Maria Andersen
Communication Specialist
Region of Peel
905-791-7800, ext. 4660

The Region of Peel works with residents and partners to create a healthy, safe and connected Community for Life for approximately 1.5 million people and over 175,000 businesses in the cities of Brampton and Mississauga and the Town of Caledon. Peel's services touch the lives of residents every day. For more information about the Region of Peel, explore and follow us on Twitter @regionofpeel and Instagram