TRI for Tribes

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View the 'TRI for Tribal Communities' factsheet.

Industrial and federal facilities located in Indian country that meet Toxics Release Inventory (TRI) reporting requirements must submit annual data to EPA and the appropriate tribal government entity. EPA makes the TRI data available online. TRI data can help tribes identify sources of toxic chemical releases that may impact the health of their communities, track changes in these releases over time, and prioritize efforts to reduce local chemical pollution.

On this page:

How many TRI facilities are on tribal lands?

In 2023, there were:

  • 377 facilities located on the lands of 47 federally recognized tribes.
    • Collectively, these facilities reported 32 million pounds of chemical releases.
  • 2,143 facilities located on or within 10 miles of the lands of 250 federally recognized tribes.
    • Collectively, these facilities reported 230 million pounds of chemical releases.

Keep in mind that there may be facilities releasing toxic chemicals on or near tribal lands that were not required to report to the TRI Program in a particular year.

View the list of facilities located on or within 10 miles of tribal lands

The search below provides interactive charts to easily access summary-level data about chemical releases from TRI facilities located on or within 10 miles of tribal lands. If no selections are made, the tool will display national-level data for all tribes.

How can tribes access more detailed TRI data?

TRI Toxics Tracker

Tribes can use TRI Toxics Tracker to:

  • map the locations of TRI-reporting facilities on or within 10 miles of their lands,
  • view customizable charts showing which tribes have the most facilities on their lands, the largest amount of chemical releases, and other summary-level information, and
  • determine if facilities on or near their lands have implemented pollution prevention practices.

TRI Toolbox

Tribes will find other online tools for accessing TRI data in the TRI Toolbox, plus resources for interpreting the data. 

Are tribes at risk from toxic chemical releases on or near their lands?

Many factors determine whether or to what extent releases of TRI-listed chemicals pose a risk to human health or the environment. The diagram below summarizes some of these factors. 

Diagram describing the factors that influence risk: exposure source, environmental fate, population, exposure route, level of exposure, and toxicity.

The TRI has some of the information described in the diagram. The TRI provides estimates of how much of certain chemicals are released into the environment and indicate how those chemicals are managed prior to (or instead of) being released. This information can be used to identify potential toxic chemical hazards near tribal communities; however, release estimates alone are not sufficient to determine exposure or to calculate potential risks to human health and the environment.

You can find out more about TRI and estimating potential risk, or browse Factors to Consider When Using TRI Data.

What help is available for tribes concerned about toxic chemical releases?

Get Updates and Contact the TRI Program

To join the TRI mailing list:

For questions or comments: Email tri.help@epa.gov

Tribal Contacts

  • EPA TRI Program Regional Coordinators: Tribes concerned about toxic chemicals released from specific industrial facilities may contact the TRI Coordinator in their region.
  • EPA Tribal Program Managers: Tribes are encouraged to contact the Tribal Program Manager in their region with questions about facilities near tribal communities.
  • TRI Tribal Contacts: Find the environmental officials designated by federally recognized tribes to receive reporting forms from TRI facilities located on the lands of federally recognized tribes.

Online Tools

Toxics Release Inventory (TRI) Program

TRI Program Contacts
TRI Program Contacts to ask a question, provide feedback, or report a problem.
Last updated on February 27, 2025