National Pollutant Release Inventory: Ten-Year Totals by Province, Industry, and Substance

Environment and Climate Change Canada's National Pollutant Release Inventory (NPRI) tracks annual pollutant releases, disposals, and transfers for recycling. The dataset provides ten years of totals broken down by province, industry, and substance, with releases categorized by media type (air, water, or land). Data is available in CSV format and was last updated in April 2026.

Use Cases

• Analyze trends in industrial pollutant releases to air, water, and land over a ten-year period.
• Compare pollution profiles and regulatory compliance across different Canadian provinces.
• Model the relationship between specific industrial sectors and their reported substance releases.
• Assess the effectiveness of environmental policies based on changes in reported releases over time.

Strengths

• Provides a ten-year time series for longitudinal analysis.
• Data is broken down by three key dimensions: province, industry, and substance.
• Releases are categorized by media type (air, water, land), disposals, and transfers for recycling.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description notes that results from the online search engine may differ from the downloadable files.

Provenance

Source

Environment and Climate Change Canada

Collection Method

Reported by facilities to the National Pollutant Release Inventory (NPRI).

Time Range

Ten years of annual data (specific years not stated).

Freshness

Last updated 2026-04-30 18:22:12.160353; freshness should be verified.

Geography

Canada, broken down by province.