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TRI National Analysis

Tribal Communities

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Under EPA policy, the Agency works with federally recognized tribes on a government-to-government basis to protect the land, air, and water in Indian country and Alaska Native villages and to support tribal assumption of program authority. Facilities located in Indian country that meet TRI reporting requirements must indicate the appropriate three-digit Bureau of Indian Affairs (BIA) tribal code on annual TRI reporting forms. These codes tell the EPA on which tribal land the facility is located.

In 2017, there were 41 facilities located in the Indian country of 18 different federally recognized tribes. These facilities collectively reported 31 million pounds of production-related waste and 10 million pounds of releases (total disposal or other releases). Of the releases reported, 96% of the TRI releases in Indian country occurred on site, and 90% of these releases were disposal to land reported by electric utilities and metal mining facilities. In 2017, these facilities primarily released metal compounds such as lead and barium. Lead is often present in the mineral ore disposed of by metal mines, and barium is present in coal and oil combusted at electric utilities.

The table below provides more details about various types of releases and waste management reported by facilities on federally recognized tribal lands.

Quick Facts for 2017: Facilities on Tribal Lands

Measure Value
Number of Facilities that Reported to TRI 41
Number of Tribes with TRI Facilities 18
Production-Related Waste Managed 30.84 million lb
Recycled 12.15 million lb
Energy Recovery 3.19 million lb
Treated 5.36 million lb
Disposed or Otherwise Released 10.14 million lb
Total Disposal or Other Releases 10.14 million lb
On-site 9.76 million lb
Air 0.60 million lb
Water 1.22 thousand lb
Land 9.16 million lb
Off-site 0.37 million lb

The interactive chart below lists the federally recognized tribes with at least one TRI-reporting facility on their lands, and includes various data related to TRI releases by the facilities located on those lands. Use the buttons in the top gray row to filter the data by industry sector, chemical, and/or tribe. The blue dropdown button on the left allows you to view the data differently by changing which chart is displayed. Visit the TRI for Tribal Communities Qlik dashboard to explore even more information about releases of chemicals on or near tribal lands. Additional information about all TRI facilities is also available in the full 2017 TRI National Analysis Qlik dashboard.

The interactive table below lists the federally recognized tribes that had at least one TRI-reporting facility on their lands, along with the total releases reported by facilities, the number of facilities, and a link to a fact sheet with more information about TRI facilities on each tribe’s land. Click on a column header to change the sorting of the table.

Total Disposal or Other Releases on Tribal Lands by Tribe, 2017

Additional resources for tribes are available on the TRI for Tribal Communities webpage. The webpage includes more detailed analyses of TRI data, links to other online tools, and Tribal Program Manager contact information.


This page was published in March 2019 and uses the 2017 TRI National Analysis dataset made public in TRI Explorer in October 2018.

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