National Pollutant Release Inventory (NPRI) - Pollutant Release Data Aggregated by Province, Industry Type and Substance, Five-Year Tabular Format

The National Pollutant Release Inventory (NPRI) is Canada's public inventory of pollutant releases (to air, water and land), disposals and transfers for recycling.

These files contain NPRI release data for the past five years in CSV format, aggregated by Province, Industry Type and Substance, and disaggregated by media (air, water and land). The number of reporting facilities represented by each aggregated data point is included*. The results can be further broken down using the pre-defined queries available in the online NPRI Facility Search.

There are important factors that should be considered prior to the use and interpretation of NPRI data. Additional information is available on the NPRI web site.

*The number of facilities returned by the online NPRI data search may differ from the number contained in the download files. The online results take into account the facility’s reported releases, disposals and transfers, but do not distinguish between media. They also include facilities reporting only under Ontario Regulation 127/01 and facilities submitting “did not meet criteria” reports.

More NPRI datasets and mapping products are available here: https://www.canada.ca/en/environment-climate-change/services/national-pollutant-release-inventory/tools-resources-data/access.html