National Pollutant Release Inventory

Tracking Pollution in Canada

The National Pollutant Release Inventory (NPRI) is Canada's legislated, publicly accessible inventory of pollutant releases (to air, water and land), disposals and transfers for recycling. It is a key resource for:

  • identifying pollution prevention priorities;
  • supporting the assessment and risk management of chemicals, and air quality modelling;
  • helping develop targeted regulations for reducing releases of toxic substances and air pollutants;
  • encouraging actions to reduce the release of pollutants into the environment; and
  • improving public understanding.

Three industrial smokestacks linking to the NPRI "Pollution Data and Reports" page.  

Pollution Data and Reports

Resources for accessing, analyzing and interpreting information on pollutant releases and transfers in Canada.


Two workers at an oil refinery linking to the "Reporting to the NPRI" page. 

Reporting to the NPRI

Information for owners or operators of facilities required to report to the National Pollutant Release Inventory.


NPRI Data Search

Find out about pollutant releases and transfers in Canada

  • Search By Company or Facility Name:

  • Search By Postal Code:
    (First 1-3 Characters)

NPRI Map Layers for use with Google Earth™

The Chemical Substances Portal