# Hazardous Materials Incident Reporting

*Last updated: 2026-06-24*

> Hazardous Materials Incident Reporting is a statutory obligation requiring carriers, shippers, and facility operators to notify competent authorities without undue delay following accidents, leaks, damage, or other incidents involving dangerous goods.

Hazardous Materials Incident Reporting is a statutory obligation requiring carriers, shippers, and facility operators to notify competent authorities without undue delay following accidents, leaks, damage, or other incidents involving dangerous goods. Reportable events generally include any actual or threatened release of hazardous substances, or situations with potential impact on human health, the environment, or infrastructure. A report must identify the substance by UN number, state the quantity involved, and describe the nature and extent of the incident. Which authorities must be notified—hazmat regulators, police, or environmental agencies—depends on the applicable regulatory regime (ADR, IMDG Code, IATA-DGR) and the jurisdiction where the incident occurs. Non-compliance can result in significant fines; in serious cases, criminal liability may follow.

**Source:** [https://www.phmsa.dot.gov/hazmat/incident-reporting-investigation](https://www.phmsa.dot.gov/hazmat/incident-reporting-investigation)

## Quick Facts

| Property | Value |
|---|---|
| Term | Hazardous Materials Incident Reporting |
| Language | EN |
| Word count | 116 |
| Last updated | 2026-06-24 |
| Source | https://www.phmsa.dot.gov/hazmat/incident-reporting-investigation |

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