Ten-year data tables by province, industry and substance – releases

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:

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)

Données et ressources

Info additionnelle

Champ Valeur
Dernière modification avril 17, 2026, 21:45 (TU)
Créé le avril 17, 2026, 21:45 (TU)
contact_email inrp-npri@ec.gc.ca
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geographic_scope ["0"]
open_canada_collection primary
open_canada_date_published 2025-11-27 00:00:00
open_canada_keywords {"en": ["Environment", "Inventory", "Reporting", "Pollutant", "Pollution", "Release", "Emission", "Transfer", "Disposal", "Recycling", "Air", "Land", "Water", "Facility", "Location", "Map", "Database", "NAICS code", "Industry type", "Chemical substance", "Stack", "Criteria air contaminant", "CAC", "Polycyclic aromatichydrocarbon", "PAH", "Dioxin", "Furan", "Hexachlorobenzene", "HCB", "Carbon monoxide", "CO", "Nitrogen oxide", "NOx", "Sulphur dioxide", "SO2", "Particulatematter", "Volatile organic compound", "VOC", "Isomer"], "fr": ["Environnement", "Inventaire", "Déclaration", "Polluant", "Pollution", "Rejet", "Émission", "Transfert", "Élimination", "Recyclage", "Air", "Sol", "Eau", "Installation", "Localisation", "Carte", "Base de données", "Code SCIAN", "Type d'industrie", "Substance chimique", "Cheminée", "Principaux contaminantsatmosphériques", "PAC", "Hydrocarbure aromatique polycyclique", "HAP", "Dioxine", "Furane", "Hexachlorobenzène", "HCB", "Monoxyde de carbone", "CO", "Oxyde d'azote", "NOx", "Dioxyde de soufre", "SO2", "Matière particulaire", "Composés organiques volatils", "COV", "Isomère"]}
open_canada_subject ["nature_and_environment"]
sensitivity_level unrestricted
title_fr Tableaux de données pour une période de dix ans, par province, industrie et substance – Rejets
update_frequency P1Y