Chemical Tracking (ChemTrac)

Municipal Code Chapter 423, Environmental Reporting and Disclosure By-law, requires that certain facilities that exceed the specified thresholds, report information each year about thel use and release of 25 "priority substances" (as identified in the by-law http://www.toronto.ca/legdocs/municode/1184_423.pdf). These priority substances are found as contaminants in Toronto's environment (mostly air) and are of concern for health.

The by-law came into effect on January 1, 2010 and the first deadline for reporting of 2010 data was June 30, 2011.

This ChemTrac data set contains chemical tracking information submitted directly online by staff from each facility and includes the facility type, address, number of employees, contact information, use and release of priority substances.

Some companies that are below the thresholds volunteered the chemical use information, even though they are not legally obligated to disclose.

The purpose of disclosing the data is to inform the public of these facilities and encourage businesses and the public to pursue environmental improvements to reduce the use and release of these 25 "priority substances". The first dataset to be disclosed through Open Data will cover the year 2010.

This data may be updated with inconsistent periodicity in order to correct inconsistencies that apply to new updates from facility owners

Datasets available for download

Additional Info

Field Value
Last Updated December 17, 2025, 18:40 (UTC)
Created December 17, 2025, 18:40 (UTC)
Domain / Topic
Domain or topic of the dataset being cataloged.
Public safety, Health, Environment
Title
Title for the Dataset.
Chemical Tracking (ChemTrac)
Description
A description of the dataset.

Municipal Code Chapter 423, Environmental Reporting and Disclosure By-law, requires that certain facilities that exceed the specified thresholds, report information each year about thel use and release of 25 "priority substances" (as identified in the by-law http://www.toronto.ca/legdocs/municode/1184_423.pdf). These priority substances are found as contaminants in Toronto's environment (mostly air) and are of concern for health.

The by-law came into effect on January 1, 2010 and the first deadline for reporting of 2010 data was June 30, 2011.

This ChemTrac data set contains chemical tracking information submitted directly online by staff from each facility and includes the facility type, address, number of employees, contact information, use and release of priority substances.

Some companies that are below the thresholds volunteered the chemical use information, even though they are not legally obligated to disclose.

The purpose of disclosing the data is to inform the public of these facilities and encourage businesses and the public to pursue environmental improvements to reduce the use and release of these 25 "priority substances". The first dataset to be disclosed through Open Data will cover the year 2010.

This data may be updated with inconsistent periodicity in order to correct inconsistencies that apply to new updates from facility owners
Tags / Keywords
Keywords/tags categorizing the dataset.
Format (CSV, XLS, TXT, PDF, etc)
File format of the dataset.
Dataset Size
Dataset size in megabytes.
Metadata Identifier
Metadata identifier – can be used as the unique identifier for catalogue entry
Published Date
Published date of the dataset.
2012-07-27
Time Period Data Span (start date)
Start date of the data in the dataset.
Time Period Data Span (end date)
End date of time data in the dataset.
GeoSpatial Area Data Span
A spatial region or named place the dataset covers.
Field Value
Access category
Type of access granted for the dataset (open, closed, service, etc).
License
License used to access the dataset.
License not specified
Limits on use
Limits on use of data.
Location
Location of the dataset.
https://open.toronto.ca/dataset/chemical-tracking-chemtrac
Data Service
Data service for accessing a dataset.
Owner
Owner of the dataset.
Toronto Public Health, [email protected]
Contact Point
Who to contact regarding access?
Contact Point Email
The email to contact regarding access?
Publisher
Publisher of the dataset.
Publisher Email
Email of the publisher.
[email protected]
Author
Author of the dataset.
[email protected]
Author Email
Email of the author.
[email protected]
Accessed At
Date the data and metadata was accessed.
Field Value
Identifier
Unique identifier for the dataset.
Language
Language(s) of the dataset
Link to dataset description
A URL to an external document describing the dataset.
Persistent Identifier
Data is identified by a persistent identifier.
Globally Unique Identifier
Data is identified by a persistent and globally unique identifier.
Contains data about individuals
Does the data hold data about individuals?
Contains data about identifiable individuals
Does the data hold identifiable data about individual?
Contains Indigenous Data
Does the data hold data about Indigenous communities?
Portal Type
Platform type of the source portal.
Field Value
Version
Version of the datatset
None
Source
Source of the dataset.
https://www.toronto.ca/community-people/health-wellness-care/health-programs-advice/chemtrac/
Version notes
Version notes about the dataset.
Is version of another dataset
Link to dataset that it is a version of.
Other versions
Link to datasets that are versions of it.
Provenance Text
Provenance Text of the data.
Provenance URL
Provenance URL of the data.
Temporal resolution
Describes how granular the date/time data in the dataset is.
GeoSpatial resolution in meters
Describes how granular (in meters) geospatial data is in the dataset.
GeoSpatial resolution (in regions)
Describes how granular (in regions) geospatial data is in the dataset.
Field Value
Indigenous Community Permission
Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
Community Permission
Community permission (who gave permission).
The Indigenous communities the dataset is about
Indigenous communities from which data is derived.
Field Value
Number of data rows
If tabular dataset, total number of rows.
Number of data columns
If tabular dataset, total number of unique columns.
Number of data cells
If tabular dataset, total number of cells with data.
Number of data relations
If RDF dataset, total number of triples.
Number of entities
If RDF dataset, total number of entities.
Number of data properties
If RDF dataset, total number of unique properties used by the triples.
Data quality
Describes the quality of the data in the dataset.
Metric for data quality
A metric used to measure the quality of the data, such as missing values or invalid formats.

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