Air Contaminant Emissions Registry

Under the Regulation Respecting the Mandatory Reporting of Certain Contaminant Emissions into the Atmosphere (RDOECA), the Ministère de l'Environnement et de la Lutte contre les Changements Climates de la Faune et des Parcs collects data on air contaminants emitted by Quebec businesses in particular. Thus, any person or municipality operating an establishment that emits air contaminants above thresholds into the atmosphere is required to report its emissions no later than June 1 of each year.

This dataset includes emissions of air contaminants reported under RDOECA or voluntarily expressed in metric tons, with the exception of dioxin and furan emissions, which are expressed in metric tons of toxic equivalents.This third party metadata element was translated using an automated translation tool (Amazon Translate).

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 18:19 (UTC)
Created	April 17, 2026, 18:19 (UTC)
contact_email	declaration.atmosphere@environnement.gouv.qc.ca
contact_person	{"en": "Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs", "fr": "Gouvernement et municipalités du Québec; Gouvernement et municipalités du Québec; Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs"}
criticality_level	[]
data_dictionary	EPSG:102100,EPSG,unknown
geographic_scope	[]
open_canada_collection	fgp
open_canada_date_published	2022-06-17 00:00:00
open_canada_keywords	{"en-t-fr": ["Air", "HackQC22", "Government information"], "fr": ["Air", "HackQC22", "Information gouvernementale"]}
open_canada_subject	["form_descriptors", "nature_and_environment", "science_and_technology"]
sensitivity_level	unrestricted
title_fr	Registre des émissions de contaminants atmosphériques
update_frequency	P1Y