National Pollutant Release Inventory

Guidance and tools on reporting to the inventory, accessing, analyzing and downloading data.


Reviewed NPRI data is now available up to 2021. You can download the data from our Explore Data page. Additionally, NPRI data is also available on the NPRI Dashboard and NPRI data search.

For technical support to access the data, please email us at

The deadline for filing your 2022 National Pollutant Release Inventory (NPRI) report is June 1st, 2023. The Single Window NPRI application is available at We typically see a surge in activity the 2 weeks prior to the reporting deadline. For an optimal reporting experience, please consider submitting your report earlier if possible.

Report a problem or mistake on this page
Please select all that apply:

Thank you for your help!

You will not receive a reply. For enquiries, contact us.

Date modified: