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URL: https://open.canada.ca/data/en/dataset/ea0dc8ae-d93c-4e24-9f61-946f1736a26f
The National Pollutant Release Inventory (NPRI) is Canada's public inventory of pollutant releases (to air, water and land), disposals and transfers for recycling.
Each file contains annual total releases for the past ten years by media (air, water or land), broken-down by province, industry or substance. Files are in .CSV format.
The results can be further broken down using the pre-defined search available at the bottom of the NPRI Data Search webpage. The results returned by the NPRI search engine may differ from the numbers contained in the downloadable files. The online search engine’s results will display releases, disposals and transfers reported by facilities, but does not distinguish between media type (i.e. air, water, land). It also displays facilities reporting only under Ontario Regulation 127/01 and facilities submitting “did not meet criteria” reports.
Please consult the following resources to enhance your analysis:
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Guide on using and Interpreting NPRI Data: https://www.canada.ca/en/environment-climate-change/services/national-pollutant-release-inventory/using-interpreting-data.html
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Access additional data from the NPRI, including datasets and mapping products: https://www.canada.ca/en/environment-climate-change/services/national-pollutant-release-inventory/tools-resources-data/exploredata.html
Supplemental Information
More NPRI datasets and mapping products are available here: https://www.canada.ca/en/environment-climate-change/services/national-pollutant-release-inventory/tools-resources-data/access.html
Supporting Projects: National Pollutant Release Inventory (NPRI)
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Additional Information
| Field | Value |
|---|---|
| Data last updated | January 16, 2026 |
| Metadata last updated | January 20, 2026 |
| Created | January 16, 2026 |
| Format | CSV |
| License | License not specified |
| Datastore active | False |
| Has views | False |
| Id | 1f7657f5-8c87-4324-8944-6dd687be6681 |
| Package id | 7c9e33f5-0030-48fb-8ec3-538bb56eb3f5 |
| Position | 1 |
| State | active |