Air Pollutant Emission Inventory
- View the online version of the Air Pollutant Emission Inventory Report 1990-2014
- Download the Air Pollutant Emission Inventory Report 1990-2014 (PDF)
- Access Air Pollutant Emission Inventory data through Canada's Open Government portal
The Air Pollutant Emission Inventory (APEI) is an annual report of air pollutant emissions across Canada published by Environment and Climate Change Canada. The report details the release of air pollutants from all known of sources since 1990. The APEI serves many purposes, including:
- supporting the development of and tracking progress on air quality management strategies, policies and regulations;
- fulfilling Canada’s domestic and international reporting obligations;
- informing Canadians about air pollutant emissions; and
- providing data to support Canada’s air quality health indices.
Air pollutant trends
|Air Pollutant||National Emission Change (1990-2014)||Major sources of emissions|
|Nitrogen oxide (NOx)||-33%||Transportation and upstream petroleum industry|
|Carbon monoxide (CO)||-62%||Mobiles sources (such as motor vehicles) and residential fuel wood combustion|
|Volatile organic compounds (VOCs)||-50%||Mobiles sources (such as motor vehicles) and upstream petroleum industry|
|Sulphur oxides (SOx)||-63%||Ore smelting, coal-fired power generators and natural gas processing|
|Cadmium (Cd)||-92%||Metal smelters|
|Mercury (Hg)||-89%||Metal smelters and landfill emissions|
|Hexachlorobenzene (HCB)||-91%||Municipal incineration and coal fired power generators|
|Dioxins and furans (D/F)||-85%||Waste incineration and steel making|
|Lead (Pb)||-89%||Metal smelting sector, mining and the declining use of leaded aviation fuel|
|Four polycyclic aromatic hydrocarbons (PAHs)||-61%||Primary metals refining and smelting sectors (aluminum, iron and steel) and Residential fuel wood combustion|
|Ammonia||+21%||Increases due to agricultural fertilizer use and larger livestock populations|
Particulate matter emissions
|Increases due to construction projects in Western Canada and the growth in vehicle traffic on paved and unpaved roads. The emissions for PM2.5 are off-set by the decrease in emissions from industrial sources (e.g. pulp and paper, wood industry and steel), diesel vehicles and Residential fuel wood combustion.|
Access the data
The Air Pollutant Emission Inventory includes emissions of the key air pollutants contributing to the issues of smog, acid rain, and reduced air quality. Data on pollutant emissions can be accessed three ways:
- Using the online query tool to perform customized searches on pollutants by year and province/territory
- Viewing our online APEI report or downloading the report to your desktop
- Accessing the data through Canada's Open Government Portal
Emissions data is available for the following 17 air pollutants for the years 1990-2014:
Criteria air contaminants (CACs):
- Total particulate matter (TPM)
- Particulate matter less than or equal to 10 microns (PM10)
- Particulate matter less than or equal to 2.5 microns (PM2.5)
- Sulphur oxides (SOx)
- Nitrogen oxides (NOx)
- Volatile organic compounds (VOCs)
- Carbon monoxide (CO)
- Ammonia (NH3)
Persistent organic pollutants (POPs):
- Dioxins and furans
- Four polycyclic aromatic hydrocarbons (PAHs) compounds (Benzo[a]pyrene, Benzo[b]fluoranthene, Benzo[k]fluoranthene and Indeno[1,2,3-cd]pyrene)
- Hexachlorobenzene (HCB)
2014 data for all pollutants is also available at the national or province/territory level:
- British Columbia
- New Brunswick
- Nova Scotia
- Prince Edward Island
- Newfoundland and Labrador
- Northwest Territories
The Air Pollutant Emission Inventory is compiled from many different data sources. Emissions data reported by individual facilities to Environment and Climate Change Canada's National Pollutant Release Inventory are supplemented with well documented, science-based estimation tools to quantify total emissions. Together these data sources provide a comprehensive overview of pollutant emissions across Canada.
When improved data sources or methodologies become available the inventory is entirely recalculated and re-published to this website. This ensures that current and historical pollutant estimates are accurate and up-to-date.
APEI data is used by the Canadian Environmental Sustainability Indicators program to report progress towards goals set by the Federal Sustainable Development Strategy and to inform Canadians on the state of the environment.
The National Pollutant Release Inventory (NPRI) is a legally mandated, publically accessible inventory of facility-level pollutant releases. NPRI data is used, along with estimation models, to calculate the pollutant emissions in the APEI.
Create personalized queries of our data using the online search query tool below
Data available on this website are current as of December 1, 2015. Ongoing data analyses may result in periodic updates.
As part of Environment quality assurance process, we conduct a number of data checks for compliance purposes and to ensure completeness.
Please contact us for more information.
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