Mandatory Air Contaminant Emissions Registry for Quebec

Quebec's Ministry of the Environment collects mandatory annual reports of air contaminant emissions from businesses exceeding regulatory thresholds. Emissions data, expressed in metric tons, includes substances like dioxins and furans measured in toxic equivalents. The dataset is updated annually with submissions due by June 1.

Use Cases

• Analyze trends in metric tons of reported air contaminants to identify regional emission hotspots.
• Model the relationship between industrial activity types and their reported dioxin and furan emissions in toxic equivalents.
• Benchmark facility-level emission levels against regulatory thresholds defined under the RDOECA.

Strengths

• Data collection is mandated by provincial regulation (RDOECA), ensuring legal compliance and consistent reporting.
• Includes specialized measurements for persistent pollutants like dioxins and furans, expressed in toxic equivalents.
• Annual update cycle provides a consistent temporal series for longitudinal analysis.

Limitations

• The specific number of reporting facilities, rows of data, and column features are unknown, limiting pre-use assessment.
• Geographic coverage is restricted to the province of Quebec, not representative of national or global emissions.
• Reliance on self-reported data from businesses may introduce accuracy variances without independent verification.

Provenance

Source

Ministère de l'Environnement et de la Lutte contre les Changements Climatiques, de la Faune et des Parcs du Québec.

Collection Method

Mandatory annual reporting by businesses and municipalities operating establishments that exceed emission thresholds.

Time Range

Annual coverage; specific start year unknown.

Freshness

Updated annually; most recent metadata update was March 2026.

Geography

Province of Quebec, Canada.