Toxics Release Inventory (TRI) Program

Basics of TRI Reporting

Every year, TRI data are submitted by certain industrial facilities and made available to the public; an overview of this process and the TRI reporting criteria are provided below. Please note that the reporting criteria are described in general terms, and that more specific guidance is available in the TRI Reporting Forms and Instructions document.

 Annual Data Collection Cycle

Annual Data Collection Cycle.  Five step process begins with January-June: Facilities Prepare and Submit Forms.  Next is July 1: TRI Formas Due to EPA.  Third section is July: TRI Preliminary Dataset Available.  Fourth section is July-October: Ongoing Data Processing and Analysis.  Last section is December: TRI National Analysis Available.

To learn more about the annual data collection cycle, click on one of the time periods below:

  • January / February - June Facilities Prepare and Submit Forms:
  • July 1 TRI Forms Due to EPA:
    • Deadline for facilities that meet TRI reporting requirements to submit TRI forms for toxic chemical disposal or other releases that occurred during the previous calendar year.
  • July TRI Preliminary Dataset Available:
    • The preliminary dataset for the recently-concluded reporting year is made available in downloadable data files on the TRI website and in Envirofacts.
  • July - October Ongoing Data Processing and Analysis:
    • The preliminary dataset is updated as additional facility reports are processed by the TRI Data Processing Center.
    • EPA begins conducting its analyses of the most recent TRI data, which will be published in the TRI National Analysis.
  • December / January TRI National Analysis Available:

Ongoing Activities

  • The TRI Program conducts data quality checks and provides analytical support for enforcement efforts led by EPA's Office of Enforcement and Compliance Assurance (OECA).
  • Preparations continue for the next TRI reporting cycle.

Reporting Criteria

If a facility meets all three of the criteria below, it must report to the TRI Program:


Is in a specific industry sector (e.g., manufacturing, mining, electric power generation)
Employs 10 or more full-time equivalent employees
Illustration of four laboratory glass containers of different shapes and sizes containing different colored liquids.
Manufactures or processes more than 25,000 lbs. of a TRI-listed chemical or otherwise uses more than 10,000 lbs. of a listed chemical in a given year

Method of Reporting

Facilities submit TRI reports via TRI-MEweb, EPA's online TRI reporting application.