EPA IRIS: Extracted Chemical Toxicity and Hazard Assessment Data

U.S. Environmental Protection Agency data extracted from the Integrated Risk Information System (IRIS). The dataset contains publicly available information on the health hazards of chemicals found in the environment, as used by EPA, state, federal, and international health organizations. The data was extracted in its original form and last updated on the platform in May 2026.

Use Cases

• Train models to classify chemical hazard levels based on toxicity information mentioned in the description.
• Analyze relationships between chemical groups and health effects based on IRIS assessment data.
• Build knowledge bases for regulatory decision support using characterized health hazard data.

Strengths

• Data originates from the authoritative U.S. EPA IRIS Program, a primary source for toxicity information.
• Assessments can cover individual chemicals, groups of related chemicals, or complex mixtures, suggesting a structured hierarchy.
• Last updated on the platform in May 2026, indicating recent metadata activity.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count, file formats, and sample data are unknown, which may limit suitability assessment.

Provenance

Source

U.S. Environmental Protection Agency (EPA), Office of Research and Development (ORD).

Collection Method

Publicly available data extracted in its original form from the EPA IRIS system.

Time Range

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Freshness

Last updated 2026-05-15 18:35:50; freshness should be verified.

Geography

United States, with use by international organizations noted.