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Download TRI: Toxic Release Inventory Maps in ArcGIS Shapefile Format

Please note that the files on this page are in a zipped .zip format and must be opened by a Windows-based computer. If you are working on a MAC computer and have the software to work with ESRI shapefiles, contact me and I can make the files you need available to you in unzipped shapefile format.

EPA recently released the 2007 TRI data.
Click here for more information and new GIS maps.

Jump to pollution maps of your state:

Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Northern Mariana Islands, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virgin Islands, Virginia, Washington, West Virginia, Wisconsin, Wyoming,

Here are some ideas for using the TRI data and maps with your GIS program or with Arcexplorer, the free GIS, and our Learn2Map tutorial:

  • Find the largest polluters in your neighborhood and ask them what steps they are taking to reduce their pollution.
  • Do environmental justice research.
  • Publish a toxic atlas of your neighborhood, county or state.
  • Do relocation investigations.
  • Do local facility audits.
  • As a catalyst for forming a local toxic watch group.
  • Distribute printed toxic maps at local events.
  • Use as an aid in landuse planning.
  • Identify potential security-related vulnerabilities.
  • Do habitat and ecological assessment and planning.
  • Assess potential health risks.
  • Study the relationship between health effects and releases.
  • Track offsite transfers of toxics.
  • Do industrial ecology research -- waste from one facility may be "raw" material for another.
  • Discover inaccuracies in reporting and/or location.

TRI 2004 Reference

Be sure to read our TRI 2004 Introductory page carefully. It will answer many of your questions and help you to make the best use of these point map layers.

Download Now

Each of the digital maps (shapefiles) are now FREE. Just our way of thanking you for your support and encouraging community mapping.

Alabama and Mississippi

Alaska, American Samoa, Guam, Hawaii, Northern Mariana Islands, Puerto Rico and Virgin Islands

Arizona and New Mexico

Arkansas and Louisiana


Colorado and Utah

Connecticut, Maine, New Hampshire, Rhode Island and Vermont

Delaware, Distric of Columbia, Maryland and West Virginia



Idaho and Nevada



Iowa and Nebraska

Kansas and Oklahoma






Montana and Wyoming

New Jersey

New York

North Carolina

North Dakota and South Dakota


Oregon and Washington


South Carolina





Data Source and Geographical Locations

We derived the geographical locations of these facilities using the longitude and latitude that are included in this public data release of the TRI data. The EPA public release also includes such information as amount and name of chemical released, amount of chemical stored on site and other useful information. We have provided the complete data along with the maps. To download the public data yourself (without our maps of course), go to

Other useful resources to check

Check our Worst Case Scenarios web page and our Toxic & Nuclear Risks In Your Backyard? for links for other resources that you can use to identify potential risks.

TRI 2004 Reference

Be sure to read our TRI 2004 Introductory page carefully. It will answer many of your questions and help you to make the best use of these point map layers.


Didn't find what you are looking for? We've been online since 1996 and have created 1000's of pages. Search below and you may find just what you are looking for.

Michael R. Meuser
Data Research & GIS Specialist is an independent firm specializing in GIS project development and data research. We created the first U.S. based interactive toxic chemical facility maps on the internet in 1996 and we have been online ever since. Learn more about us and our services.

Have a project in mind? If you have data, GIS project or custom shapefile needs contact Mike.

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