Substance Use and Harms Tool
The Substance Use and Harms Tool provides comprehensive epidemiological information on substance use and harms data in Ontario. It enables users to explore data including emergency department (ED) visits, hospitalizations and deaths. Results can be viewed by public health unit, age, sex, and in some cases, drug type.
The Substance Use and Harms Tool will be updated quarterly.
How to Use Substance Use and Harms Tool
This resource is best viewed on desktop or tablet.
To learn how to navigate the tool, see our User Guide.
To see information on source data, classifications, citations, definitions and more, see our Technical Notes.
Updated
10 March 2026
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