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Stormwater Credit Program

Stormwater Credit Program

The Stormwater Credit Program provides a stormwater charge reduction to multi-residential and non-residential properties whose stormwater practices or measures provide a direct benefit to the City's Stormwater Management Program.

stormwater credit program storm water reduction practices

Benefits of stormwater practices

How are Credits Awarded?

To be awarded credits, applicants must provide engineering reports and drawings that demonstrate how well existing or proposed stormwater best management practices (BMPs) perform, according to the evaluation criteria below.

Stormwater Credit Schedule
Category Evaluation Criteria Total Credit
(50% max)
Peak Flow Reduction Per cent reduction of the 100 year post-development flow to pre-development conditions of the site. Up to 40% Up to 50%
Water Quality Treatment Per cent of site (hard surface) receiving water quality treatment consistent with Provincial criteria for enhanced treatment. Up to 10%
Runoff Volume Reduction Per cent capture of first 15 mm of rainfall during a single rainfall event. Up to 15%
Pollution Prevention Develop and implement a pollution prevention plan. Up to 5%

Apply for credits

Participation in the Stormwater Credit Program is by application only.

There are three types of credit applications:

  • New Credit
    Apply for a new or pre-approved credit with an existing or proposed BMP for the first time; or apply subsequent to the cancellation of an approved credit.
  • Credit Update
    Update an approved credit to reflect a change that may affect the performance of the current BMPs.
  • Credit Renewal
    Renew an approved credit that is about to expire.
Apply Online  →
or download the printable application

Need help?

View the Stormwater Charge Credit Application Guidance Manual to assist with the application process.

Visit best management practices and measures for more detailed information on the type of infrastructure to consider for the Stormwater Credit Program.

To ask questions about the Stormwater Credit Program, please email us at:

Learn More

The City’s Stormwater Credit Policy outlines the program and process.

Credit Program Information Session for Multi-Residential Properties

Credit Program Information Session

Administration of Stormwater Credit Program

The Stormwater Credit Program will be administered by the City’s Environmental Services Section. Stormwater Credits will appear on the Region of Peel water bill as a reduction to the Stormwater Charge amount for the property. As part of the program, the City may conduct site inspections in relation to the stormwater practices on a property. For more information, see the Credit Policy and Fees and Charges By-Law.

Email Updates

To be notified about information and events related to the Stormwater Credit Program, please enter your name and email address:

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Your personal information is collected under the authority of City of Mississauga Stormwater Fees and Charges By-law 135-15. The personal information will be used by City of Mississauga Staff to share information about the Stormwater Credit Program. Staff may also follow up with you or collect feedback. Questions about the collection of this personal information only should be directed to the Stormwater Charge Program Coordinator, 201 City Centre Drive, Suite 800, Mississauga ON L5B 2T4.

For more information call 3-1-1 or 905-615-4311 outside city limits. Monday to Friday from 7 a.m. to 7 p.m.