Programs and Services
A Capital project is an infrastructure project that maintains, renews or improves a City service.
Mississauga staff manages the stormwater service and program with the planning, construction, operation and maintenance of stormwater drainage infrastructure.
Mississauga is a growing city. With more people living here and more businesses operating here, the amount of water running off hard surfaces such as roofs and parking lots is increasing. In addition, changes to our climate can bring heavier rainfalls and rapidly melting snow. These changes mean there is more stormwater entering our system than ever before, causing costly wear and tear on our already aging infrastructure.
We minimize potential risks to you, your property and the environment though the stormwater service and program. We need to invest more money in our stormwater system to keep it in good working order and to avoid costly repairs in the future.
Ongoing Programs and Services
Watercourse Monitoring and Pond Maintenance
Watercourse is the word used for both constructed channels and natural creeks and rivers. In many cases, watercourses have a combination of man-made and natural features.
City staff regularly monitor our watercourses looking for drainage problems or erosion where creek banks may slowly wash away. They inspect watercourses for changes, record measurements, fill out evaluation forms, and map and photograph any problem areas. This information is used for the City’s Storm Drainage and Watercourses maintenance and capital programs.
Stormwater ponds are meant to collect sediments and pollutants over time and these materials must be removed every 10-15 years to keep the ponds working. City-owned stormwater ponds are inspected regularly and sediment removal projects are scheduled into the City’s capital program. Learn more here.
The City monitors rainfall with the use of 14 tipping bucket rain gauges across Mississauga; they measure how much rain has fallen and over how long a period of time. This data helps to calculate the strength of the storm and how often storms that strong will happen again in the future. Learn more here.
Obtaining a Storm Sewer Connection
If you want storm drains on your property connected to the City of Mississauga’s storm sewer network, the City can provide you with one, provided that you follow the permit process and provide the required documents and payment for the permit. Obtaining a Permanent Storm Connection Approval (PDF).
- Contact us at email@example.com
Approvals for Temporary Storm Sewer Discharge
To protect downstream water quality, the Environmental Services Section requires an approval for the temporary discharge of any surface runoff or ground water to the City storm sewer system during construction and maintenance activities. All discharges to the City's stormwater system must meet the requirements presented in Storm Sewer By-Law No. 259-05, as amended.
To initiate a storm sewer discharge approval, email a request to: firstname.lastname@example.org
Erosion and Sediment Control By-law 512-91
Residents looking to change the land on their property must be in compliance with the Erosion and Sediment Control By-law. Learn more here..
Encroachment on Public Lands By-law 0057-2004
When making changes or additions to your property, it is important to stay in your property’s limit and not extend onto public property. Encroaching on City property can interfere with lot drainage, City maintenance and natural green space and limit the use and enjoyment of that public property. Learn more here.
- Read the full Encroachment on Public Lands By-law 0057-2004 here.
For information on City bylaws, visit our By-laws page.
Requests for Use of Non-Potable Groundwater Standards
For site assessment and remediation, standards set out by the Ministry of the Environment, Conservation and Parks (MECP) are applied to compare to chemical concentrations in soil, groundwater, and sediment. If the subject site and its surrounding area are supplied with drinking water or private water wells, potable site condition standards are applicable for the subject site. If the subject site and its surrounding area are serviced by municipal water supply, non-potable site condition standards are applicable for the subject site.
The property owner is required under Section 35 (3) (d) of O. Reg. 153/04, amended, to notify the local municipality of their intent to use non-potable site condition standards in preparing a Record of Site Condition (RSC) for a property.
The City will respond to non-potable requests within 30 business days.
To submit a notice of intention to apply the non-potable groundwater site condition standards to the City, email the request to: Env.Inquiries@mississauga.ca
Storm Sewer By-Law Compliance and Servicing Inquiries
Environmental Services Section addresses inquiries regarding storm sewer connections along with any violations of the Storm Sewer Use By-Law No. 259-05, as amended, for properties located within the City. Payment of the appropriate fee as outlined in the Transportation and Works Fees and Charges By-law 166-17
To submit a Storm Sewer By-Law Compliance and Servicing Inquiry to the City, email the request to: Env.Inquiries@mississauga.ca
The Region of Peel is responsible for drinking water/sanitary services as well as emergency spill response services and should be contacted directly if you need more information about those services.
- Oil and Grit Separators (OGS)
- Oil and Grit Separator Booklet
- Brownfields Site Development
- Ontario Ministry of Environment’s Brownfields Redevelopment
- Environmental searches conducted by Mississauga Fire and Emergency Services
- For information about zoning, building permits, development applications, etc. you can visit the Property Information Search service or you can review the City's Official Plan.
Storm Sewer Discharge Approvals
The Environmental Services Section requires an approval to discharge any surface runoff or ground water to the City storm sewer system during construction and maintenance activities. All discharge must meet the requirements presented in Storm Sewer By-Law No. 259-05, as amended.
To initiate a storm sewer discharge approval, email a request to: Env.Inquiries@mississauga.ca