The industrial conglomerate Standard Industries ranked as the biggest corporate toxic air polluter in the U.S. in 2022, with a toxic score of roughly 20 million. The second-largest toxic air polluter that year was Kaiser Aluminum. 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 2022, based on toxic score
(in millions)
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University of Massachusetts (Political Economy Research Institute). (December 18, 2024). Largest corporate toxic air polluters in the United States in 2022, based on toxic score (in millions) [Graph]. In Statista. Retrieved June 07, 2025, from https://www.statista.com/statistics/1043907/largest-us-corporate-toxic-air-polluters/
University of Massachusetts (Political Economy Research Institute). "Largest corporate toxic air polluters in the United States in 2022, based on toxic score (in millions)." Chart. December 18, 2024. Statista. Accessed June 07, 2025. https://www.statista.com/statistics/1043907/largest-us-corporate-toxic-air-polluters/
University of Massachusetts (Political Economy Research Institute). (2024). Largest corporate toxic air polluters in the United States in 2022, based on toxic score (in millions). Statista. Statista Inc.. Accessed: June 07, 2025. https://www.statista.com/statistics/1043907/largest-us-corporate-toxic-air-polluters/
University of Massachusetts (Political Economy Research Institute). "Largest Corporate Toxic Air Polluters in The United States in 2022, Based on Toxic Score (in Millions)." Statista, Statista Inc., 18 Dec 2024, https://www.statista.com/statistics/1043907/largest-us-corporate-toxic-air-polluters/
University of Massachusetts (Political Economy Research Institute), Largest corporate toxic air polluters in the United States in 2022, based on toxic score (in millions) Statista, https://www.statista.com/statistics/1043907/largest-us-corporate-toxic-air-polluters/ (last visited June 07, 2025)
Largest corporate toxic air polluters in the United States in 2022, based on toxic score (in millions) [Graph], University of Massachusetts (Political Economy Research Institute), December 18, 2024. [Online]. Available: https://www.statista.com/statistics/1043907/largest-us-corporate-toxic-air-polluters/
