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Primary Industry

Primary Release Method

Average Yearly Release

Chemical Checklist
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Average Yearly Release

State vs. National Median Facility Release

Facility Count

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About The App


The US Environmental Protection Agency makes much of its data available to the US public. Of this data, one of the most interesting is their "Toxics Release Inventory" (TRI). This inventory is an method of tracking the toxic waste management processes and amounts in US facilities. Data is reported annually by individual facilities. Chemicals that are required to be reported are generally those that cause:

  • Cancer or other chronic human health effects
  • Significant adverse acute human health effects
  • Significant adverse environmental effects

ToxOnline offers a way to access, view, and analyze this TRI data in a way that is user friendly and efficient.

This app originally started as a final project for an Exploratory Data Analysis course (STAT 442) at South Dakota State University. However, since then it has seen many improvements, including better functionality, user friendliness, and advanced features. Now it serves as a fully operational environmental data analysis tool.

Important Links


Additional Information


  • Most tabs, except for the National tab, utilize the past decade (2013-2023) of the EPA's TRI data. The National tab only uses the 2023 data from the TRI to give the most recent statistics for the United States
  • For more in-depth information on how to use other tabs, press the HELP button in the upper right corner!
  • Any dropdown menu can be used as a searchbar if cleared beforehand using the backspace key