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.
What’s New (as of July 25, 2025):- New data on:
- ED visits and hospital stays related to stimulant-, benzodiazepine- and alcohol-related poisonings.
- Distribution of harm reduction supplies, including naloxone kits, needles and foils
- Alcohol-attributable hospitalizations and deaths due to alcohol toxicity
Updated data on opioid-related harms, including ED visits, hospital stays and deaths.
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
30 July 2025
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