Air Contaminant Emissions Registry

Under the Regulation respecting the mandatory reporting of certain emissions of contaminants into the atmosphere (RDOECA), the Ministry of the Environment and the Fight against Climate Change collects data on air contaminants emitted by Quebec companies 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 January 16, 2026, 20:54 (UTC)
Created January 16, 2026, 20:54 (UTC)
contains_pii non
criticality_level Élevé
data_formats CSV; ESRI REST; FGDB/GDB; GEOJSON; GPKG; HTML; PDF; XLS; other
fair_openness Level 2 - Machine-readable
geographic_scope Québec
sensitivity_level Faible
source_inventaire Inventaire_W
source_url https://open.canada.ca/data/en/dataset/34a55740-b030-4618-9558-9c69d8e93ac4
subject form_descriptors, nature_and_environment, science_and_technology
update_frequency P1Y
year_most_recent 2025-05-01 17:41:55.562000
year_start 2022-11-30 12:26:46.441000