Largest U.S. corporate toxic air polluters

LyondellBasell was the biggest corporate toxic air polluter in the United States in 2020, with a toxic score of 16.2 million. The second-largest toxic air polluter that year was BASF. Toxic scores are calculated by multiplying pounds of toxic air released, by toxicity, and by population exposure.

Largest corporate toxic air polluters in the United States in 2020, based on toxic score (in millions)*

Characteristic	Toxic score in millions
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Release date

2022

More information

Region

United States

Survey time period

2020

Supplementary notes

Figures were rounded.

* Toxic score is based on pounds released x toxicity x population exposure.
Estimated population chronic health human health risk from air releases and incineration transfers reported to the US Environmental Protection Agency's Toxics Release Inventory (TRI) for the 2017 Reporting Year, as computed by the US EPA's Risk-Screening Environmental Indicators (RSEI ver. 2.3.7) from quantity released, toxicity of chemicals, and population exposure. Data are adjusted by the Corporate Toxics Information Project (CTIP) for subsequent revisions to TRI data, including where available revisions to the share of hexavalent chromium in chromium releases.

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