Toxic 100 Air Polluters Index (2024 Report, Based on 2022 Data)

Toxic 100 Air Rank	Corporation	Toxic score (pounds released x toxicity x population exposure)	Millions of pounds of toxic air releases	Millions of pounds of toxic incineration transfers	EJ: Poor Share	EJ: Minority Share	% of toxic score from a single facility
66	Zimmer Biomet	453,787	0.01		14%	57%	91%
31	Westlake Chemical	1,351,589	3.66	2.12	16%	31%	34%
79	Westinghouse Air Brake Technologies (Wabtec)	263,590	0.32		19%	41%	95%
60	Valero Energy	526,447	3.61	0.11	18%	71%	33%
78	United States Steel	267,057	1.73	4.53	20%	52%	58%
5	Tesla Inc.	6,954,555	0.28	0.18	10%	42%	97%
22	Terumo	2,190,748	0.06		9%	33%	100%
82	Targa Resources	255,117	0.70		20%	88%	98%
27	STERIS	1,532,448	<0.01	<0.01	10%	62%	53%
1	Standard Industries Inc.	19,819,724	0.96	1.38	17%	74%	99%
83	Spirit AeroSystems	255,053	0.58		20%	47%	100%
52	Solvay	657,468	0.74	1.82	15%	48%	46%
43	Snap-on	853,482	0.01		19%	17%	88%
44	Siemens Energy	851,495	<0.01		12%	47%	98%
20	Shell PLC	2,353,779	2.64	0.01	16%	53%	30%
73	Saudi Arabian Oil Company (Saudi Aramco)	359,146	2.86	2.45	17%	50%	41%
75	Sasol	314,593	0.84	0.06	15%	25%	93%
86	Saint-Gobain	241,687	0.71	0.03	12%	38%	51%
24	Ryerson Holding Corporation	1,749,530	<0.01		15%	69%	74%
90	RTX Corporation	237,092	0.05	0.04	12%	42%	52%
59	Rolls-Royce	538,887	0.01		29%	65%	98%
21	Rio Tinto	2,208,082	0.30	<0.01	8%	33%	91%
25	Pritzker Organization	1,728,903	0.03		28%	67%	79%
16	PPG Industries	2,847,952	0.81	3.34	16%	38%	57%
46	Phillips 66	803,565	4.68	0.08	15%	61%	33%
69	Petroleos Mexicanos (Pemex)	438,869	0.28		19%	78%	100%
41	PBF Energy	885,697	1.63	<0.01	13%	73%	81%
92	Owens Corning	218,804	1.16	<0.01	15%	47%	27%
96	Olin Corp.	207,678	0.31	3.51	15%	67%	60%
38	Occidental Petroleum	1,003,902	0.88	2.55	18%	72%	30%
28	O'Neal Industries	1,526,886	0.02		24%	59%	51%
63	O-I Glass	468,681	0.02		14%	42%	54%
53	Nucor	610,547	0.63	<0.01	15%	38%	18%
29	NOV Inc.	1,482,627	1.72	<0.01	14%	60%	59%
39	Mitsui	1,003,671	0.10	0.10	16%	70%	100%
89	Michelin	238,744	0.37		15%	38%	66%
80	Medtronic	261,998	0.02	0.06	15%	50%	88%
88	McWane	238,986	0.04	<0.01	24%	23%	95%
37	Marathon Petroleum	1,061,905	5.08	0.06	15%	50%	31%
10	LyondellBasell Industries	5,019,237	5.68	3.23	17%	75%	93%
65	Lotte Chemical	465,115	0.05	<0.01	14%	25%	100%
47	Linde	772,773	0.45	<0.01	15%	49%	63%
55	Leggett & Platt	588,797	0.08	0.01	7%	39%	98%
45	Koch Industries	811,542	29.19	1.82	19%	56%	69%
61	KKR & Co.	521,241	0.06	0.01	14%	46%	42%
57	Kingspan plc	578,957	0.03	<0.01	10%	19%	100%
4	Kaiser Aluminum	15,741,494	0.28		13%	16%	100%
72	Johnson & Johnson	363,867	0.03	0.01	13%	48%	63%
95	International Paper	207,704	31.50	<0.01	17%	41%	21%
74	International Flavors & Fragrances	357,349	0.61	2.07	18%	17%	99%
68	Ingredion	439,888	0.47		15%	45%	47%
54	Indorama Ventures	594,476	0.83	<0.01	14%	60%	73%
3	Huntsman Corp.	17,664,686	0.78	6.70	11%	37%	90%
94	Huntington Ingalls Industries	212,848	0.19	0.08	19%	63%	83%
34	Howmet Aerospace	1,145,886	0.06	0.01	18%	53%	42%
98	Honeywell International	200,642	1.12	0.04	26%	24%	76%
76	Hitachi	300,892	0.46	<0.01	11%	20%	78%
93	Henkel	215,352	0.05	0.34	20%	51%	79%
32	Griffon Corp.	1,211,789	0.04	0.03	16%	74%	100%
2	Greenbrier Companies	18,417,062	0.18	<0.01	11%	31%	100%
85	Graphic Packaging	250,675	6.94		26%	48%	82%
62	Goodyear Tire & Rubber	510,693	1.30	0.08	23%	80%	79%
91	Gerdau	232,925	0.10	<0.01	13%	48%	51%
36	General Electric	1,093,164	0.21	<0.01	13%	37%	39%
6	Garmin	6,947,660	0.06		12%	86%	100%
15	Freeport-McMoRan	2,873,997	3.55	<0.01	16%	65%	97%
71	Formosa Plastics	396,900	1.61	16.84	22%	71%	68%
17	Exxon Mobil	2,692,144	9.20	0.77	18%	68%	44%
26	Evonik Industries	1,681,226	0.32	0.55	18%	47%	61%
81	Emerson Electric	259,680	0.01		12%	45%	56%
9	Edwards Lifesciences	5,405,285	<0.01	0.01	45%	97%	100%
67	Ecolab	444,069	0.01	0.40	14%	81%	99%
19	Eastman Chemical	2,407,690	4.74	0.42	18%	45%	71%
12	Dow Inc.	4,714,688	5.94	13.28	17%	51%	37%
42	Covestro	880,866	0.06	2.90	12%	24%	92%
99	Commercial Metals Co.	199,400	0.07		22%	42%	68%
56	Cleveland-Cliffs	584,089	0.83	0.16	21%	43%	17%
48	Clayton Dubilier & Rice	764,712	0.25	<0.01	14%	38%	82%
40	Chevron	961,237	3.14	0.06	14%	64%	42%
51	Cenovus Energy	660,237	0.53	<0.01	21%	35%	92%
14	Celanese	2,902,196	0.86	8.32	15%	66%	99%
7	Carpenter Technology	5,587,044	0.04		20%	58%	93%
33	Carlyle Group	1,207,037	0.42	0.20	17%	80%	90%
84	BP	252,781	0.72	0.01	18%	63%	83%
87	Bio-Rad Laboratories	240,154	0.01	0.40	11%	64%	100%
18	Berkshire Hathaway	2,664,227	2.11	0.39	14%	32%	26%
8	Becton Dickinson	5,490,687	0.11	0.01	10%	45%	41%
11	BASF	4,990,192	4.90	4.56	15%	40%	48%
77	Baker Hughes	294,903	0.01		13%	59%	68%
58	ATI Inc.	561,616	0.59	0.01	14%	15%	66%
70	Assa Abloy	432,533	0.02	<0.01	12%	45%	86%
23	Ashland Global Holdings	1,838,184	0.98	0.04	20%	57%	73%
50	Apollo Global Management	674,649	0.55	0.01	12%	25%	37%
35	Ametek	1,143,673	0.20		11%	40%	58%
64	American Electric Power	466,961	1.33		14%	10%	63%
100	Alfa S.A.B.	187,853	0.72	0.01	18%	46%	98%
13	Albemarle	3,446,880	0.47	0.01	17%	72%	53%
49	Akzo Nobel	676,592	0.09	0.04	17%	66%	100%
30	Air Products & Chemicals	1,357,769	0.27	<0.01	11%	38%	100%
97	A.O. Smith Corp.	204,545	0.07	0.01	12%	23%	66%

Explanatory notes (For details, see the technical notes).

This edition of the Toxic 100 Air Polluters ranks companies by comparative chronic human health risk from air pollutants directly released or transferred to incinerators (and not destroyed) from large facilities in the US in 2022.

RSEI score: 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 2022 Reporting Year, as computed by the US EPA's Risk-Screening Environmental Indicators (RSEI ver. 2.3.12) 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.
Source: US EPA and Corporate Toxics Information Project (CTIP).

Quantity of toxic air releases and incineration transfers: Millions of pounds of toxic chemicals released to the air on-site or transferred offsite for incineration in the TRI 2022 Reporting Year, without adjustment for toxicity or population exposure.  
Source: US EPA.

Environmental Justice (EJ): Poor Share and Minority Share: Shares of the total population health risk borne by people living below the poverty line or by people in minority racial/ethnic groups. In the U.S. population, 10.5 percent lived below the poverty line in 2020 and 40 percent are members of minority racial/ethnic groups.  
Sources: US EPA, US Census, and CTIP.

Coverage: This table presents the RSEI companies that appear on the Forbes Global 2000 list, the Forbes America's Largest Private Companies list, the Fortune 500 list, the Fortune Global 500, the Russell 1000 list, or the S&P 500.  Individual facilities are assigned to corporate parents on the basis of the most current information on their ownership structure as of mid 2024.  
Source: CTIP.

The links from each parent name lead to an application that gives detailed facility and chemical information about the company. You can also search for companies not on the Toxic 100 Air Polluters. For more information on the data, see the technical notes.