Reporting guide for the National Pollutant Release Inventory

Canadian Environmental Protection Act (CEPA)

PDF version [1.7 MB]


Prepared by: Shaleen Humphreys

Special thanks to: Anne Monette, Fabienne Lachance, and Jody Rosenberger.

The Chemical Abstracts Service (CAS) Registry Number (CAS RN) is the property of the American Chemical Society, and any use or redistribution, except as required in supporting regulatory requirements and/or for reports to the government when the information and the reports are required by law or administrative policy, is not permitted without the prior, written permission of the American Chemical Society.

D-U-N-S is a trademark of Dun & Bradstreet, Inc.


Should any inconsistencies be found between this guide and the official Canada Gazette, Part I Notice with respect to substances in the National Pollutant Release Inventory for 2016 and 2017, published on February 27, 2016, the Notice will prevail.

Table of contents

  1. Introduction
  2. Reporting deadline and changes to reporting requirements
  3. General information and reporting requirements
  4. Reporting for part 1A substances – core substances
  5. Reporting for part 1B substances - alternate threshold substances
  6. Reporting for part 2 substances - polycyclic aromatic hydrocarbons
  7. Reporting for part 3 substances - dioxins, furans and hexachlorobenzene
  8. Reporting for part 4 substances - criteria air contaminants
  9. Reporting for part 5 substances - speciated volatile organic compounds
  10. References
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