PERI at University of Massachusetts Amherst+Toxic Score

Toxic Score

A measure of toxic releases in the US which takes toxicity and the exposure of the population into account.

Companies Values

EI du Pont de Nemours

2013 = 7.09M

Bayer AG

2013 = 5.26M

Dow Chemical

2013 = 4.36M

Exxon Mobil

2013 = 3.21M


2013 = 2.99M

LyondellBasell Industries

2013 = 2.95M

Renco Group

2013 = 2.8M

General Electric

2013 = 2.61M

Ineos Group

2013 = 2.4M

Public Service Enterprise

2013 = 1.7M

Phillips 66

2013 = 1.39M

Eastman Chemical

2013 = 1.38M

Koch Industries

2013 = 1.24M

Rio Tinto

2013 = 1.19M

Praxair, Inc.

2013 = 1.18M

Energy Transfer Partners

2013 = 1.17M

Tenneco, Inc.

2013 = 1.17M

Allegheny Technologies

2013 = 1.07M

Occidental Petroleum

2013 = 1.04M

Precision Castparts

2013 = 1.03M

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The Toxics Release Inventory (TRI), compiled by the U.S. Environmental Protection Agency (EPA) in accordance with the Emergency Planning and Community Right-to-Know Act of 1986, annually reports the weight (in pounds) of each of approximately 600 toxic chemicals released into the environment by major industrial facilities in the United States.

The Political Economy Research Institute at the University of Massachusetts AMHERST uses the Toxic 100 Air Polluters index to identify the top U.S. air polluters among the world's largest corporations.


This is a formula metric which looks for the volume of toxic material released in the United States X Toxicity X Population Exposure.

Bulk Import