Toxic hazard is calculated as pounds of toxics released directly to surface water plus pounds transferred to POTWs multiplied by chemical-specific toxicity weights. Figures have been rounded.
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Toxic hazard of largest water polluters in the United States 2022
With a toxic hazard of approximately ** billion, Dow Inc. was by far the largest corporate water polluter in the United States in 2022. Huntsman Corp followed second, with a toxic hazard score of roughly ** billion. Toxic hazard is based on the volume of toxics released multiplied by their toxicity.
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University of Massachusetts (Political Economy Research Institute). (December 18, 2024). Largest corporate water polluters in the United States in 2022, based on toxic hazard (in billions) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 25, 2026, from /statistics/799176/largest-corporate-water-polluters-in-the-us/
University of Massachusetts (Political Economy Research Institute). "Largest corporate water polluters in the United States in 2022, based on toxic hazard (in billions)." Chart. December 18, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 25, 2026. /statistics/799176/largest-corporate-water-polluters-in-the-us/
University of Massachusetts (Political Economy Research Institute). (2024). Largest corporate water polluters in the United States in 2022, based on toxic hazard (in billions). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 25, 2026. /statistics/799176/largest-corporate-water-polluters-in-the-us/
University of Massachusetts (Political Economy Research Institute). "Largest Corporate Water Polluters in The United States in 2022, Based on Toxic Hazard (in Billions)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 18 Dec 2024, /statistics/799176/largest-corporate-water-polluters-in-the-us/
University of Massachusetts (Political Economy Research Institute), Largest corporate water polluters in the United States in 2022, based on toxic hazard (in billions) ÌÇÐÄÆƽâ°æ, /statistics/799176/largest-corporate-water-polluters-in-the-us/ (last visited July 25, 2026)
Largest corporate water polluters in the United States in 2022, based on toxic hazard (in billions) [Graph], University of Massachusetts (Political Economy Research Institute), December 18, 2024. [Online]. Available: /statistics/799176/largest-corporate-water-polluters-in-the-us/
