Toxics Release Inventory (TRI) Program

TRI Program Timeline

Learn how the Toxics Release Inventory (TRI) Program originated and how it has expanded over the years. For more information about these events, see TRI Program Timeline (PDF)

August 2013

myRTK Logo
The "myRTK" application debuted in 2010 as EPA's first TRI mobile app.

April 2012

October 2011

November 2010

July 28, 2010

  • Earliest-Ever Availability of TRI Data

June 2010

December 2009

Cover of the 2008 TRI National Analysis overview brochure
The 2008 TRI National Analysis report was the earliest-ever publication of EPA's analysis of the most recent TRI data.

June 2009

April 2009

August 2008

January 2008

May 2007

December 2006

January 2001

October 1999

July 1998

Image of chemical storage tanks with an industrial facility in the background
Image of chemical storage tanks with an industrial facility in the background

May 1997

November 1994

August 1993

Fall 1991

  • EPA Considers Three-Phase Approach to Broadening Scope of TRI

November 1990

June 1989

  • EPA Publishes First National TRI Report for Reporting Year 1987

July 1, 1988

  • First TRI Reporting Deadline for Reporting Year 1987 Data

October 1986

A sign commemorating the Bhopal chemical disaster that occurred in December 1984.
A sign at a memorial for victims of the 1984 toxic chemical disaster in Bhopal, India. The Bhopal event contributed to the creation of the TRI Program.

August 1985

  • Toxic Chemical Leak in Institute, West Virginia

December 1984