| Aggregate Industries Inc | Holcim Group | building materials | water pollution violation | 2009 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $2,750,000 |
| AgFirst Farmers Cooperative | | | water pollution violation | 2003 | $9,843 |
| Agfa Corporation | | | environmental violation | 2011 | $15,700 |
| AGEE CONSTRUCTION COMPANY | | | water pollution violation | 2003 | $16,000 |
| AGCO Corporation and Perkins Engines Company Ltd | AGCO Corp. | agribusiness | air pollution violation | 2007 | $95,000 |
| AGCO CORP | AGCO Corp. | agribusiness | air pollution violation | 2000 | $42,500 |
| AGAR SUPPLY COMPANY INC (SB) | | | air pollution violation | 2006 | $5,190 |
| AGAN CHEMICAL MANUFACTURING | | | environmental violation | 2001 | $16,500 |
| AGA Environmental, Inc. (SB) | | | asbestos violation | 2013 | $12,000 |
| AG-IOWA COOPERATIVE COMPANY | | | environmental violation | 2002 | $5,500 |
| AG VALUE-DP LLC | | | environmental violation | 2004 | $13,000 |
| AG Specialties LLC | | | environmental violation | 2012 | $6,320 |
| Ag Production Company | | | pesticide violation | 2019 | $24,697 |
| Ag Production Company | | | environmental violation | 2019 | $24,697 |
| AG PROCESSORS, INC | | | water pollution violation | 2018 | $736,000 |
| Ag Processing, Inc. | Ag Processing Inc. | agribusiness | water pollution violation | 2018 | $700,000 |
| AG PROCESSING INC A COOPERATIVE | Ag Processing Inc. | agribusiness | water pollution violation | 2012 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $96,588 |
| Ag Processing Inc | Ag Processing Inc. | agribusiness | environmental violation | 2011 | $96,588 |
| Ag Partners Cooperative | | | environmental violation | 2022 | $46,960 |
| AFTON CHEMICAL CORP | NewMarket Corp. | chemicals | air pollution violation | 2012 | $168,000 |
| AFTON CHEMICAL | NewMarket Corp. | chemicals | air pollution violation | 2020 | $327,500 |
| Affiliated Foods | | | air pollution violation | 2005 | $5,625 |
| AFCO C&S, LLC | | | pesticide violation | 2019 | $1,489,000 |
| AFCO C&S, LLC | | | environmental violation | 2019 | $1,489,000 |
| AFC Cable Systems, Inc. | | | environmental violation | 2023 | $40,000 |
| AFC Cable Systems, Inc. | | | environmental violation | 2022 | $40,000 |
| AEXCEL CORPORATION | | | air pollution violation | 2004 | $66,312 |
| AES Thames, LLC | AES Corp. | utilities and power generation | water pollution violation | 2010 | $140,000 |
| AES THAMES, LLC | AES Corp. | utilities and power generation | air pollution violation | 2010 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $140,000 |
| AES Puerto Rico, L.P. | AES Corp. | utilities and power generation | water pollution violation | 2012 | $170,000 |
| AES Hawaii, LLC | AES Corp. | utilities and power generation | air pollution violation | 2021 | $199,725 |
| AES HAWAII | AES Corp. | utilities and power generation | environmental violation | 2001 | $45,430 |
| AES ENVIRONMENTAL, LLC | | | hazardous waste violation | 2013 | $65,000 |
| Aervoe Industries, Inc. | | | air pollution violation | 2012 | $7,450 |
| Aervoe Industries Incorporated | | | environmental violation | 2004 | $5,000 |
| AEROVOX, INC. | | | environmental violation | 2000 | $5,000 |
| AEROVOX INCORPORATED | | | environmental violation | 2003 | $250,000 |
| Aeroturbine, Inc. | AerCap | miscellaneous services | hazardous waste violation | 2017 | $100,000 |
| AEROSPACE/DEFENSE COATINGS OF GEORGIA, INC. (SB) | | | hazardous waste violation | 2011 | $24,630 |
| AEROSPACE TESTING LABORATORY INC | | | air pollution violation | 2001 | $100,000 |
| AEROSPACE COATINGS INTERNATIONAL LLC | | | water pollution violation | 2017 | $400,000 |
| Aerosols Danville, Inc. | | | environmental violation | 2021 | $175,000 |
| Aerosol Services Company Inc. | | | hazardous waste violation | 2006 | $56,000 |
| AEROQUIP CORPORATION | Eaton | industrial equipment | air pollution violation | 2000 | $400,000 |
| Aeropres Corporation | | | air pollution violation | 2015 | $6,080 |
| Aeropres Corporation | | | air pollution violation | 2016 | $32,500 |
| AERONCA INC. | | | environmental violation | 2000 | $10,000 |
| Aerodynamics | | | hazardous waste violation | 2014 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $118,000 |
| AEROCHEM INC. | Ducommun | aerospace and military contracting | environmental violation | 2000 | $5,000 |
| Aero-Electric Connector, Inc. | | | hazardous waste violation | 2008 | $120,000 |
| Aero-Dynamics, Inc. | | | hazardous waste violation | 2014 | $118,000 |
| AERO TRANSPORTATION PRODUCTS, INC | | | environmental violation | 2016 | $10,845 |
| Aero Star Petroleum, Inc. | | | hazardous waste violation | 2020 | $82,500 |
| AERO DESIGN, INC. | | | hazardous waste violation | 2001 | $5,000 |
| Aero Design, Inc. | | | hazardous waste violation | 2003 | $128,300 |
| AERC Recycling Solutions | | | hazardous waste violation | 2012 | $5,200 |
| AERC ACQUISITON CORPORATION dba AERC RECYCLING SOL | | | hazardous waste violation | 2020 | $50,000 |
| AERC ACQUISITION CORP D/B/A AERC RECYCLING SOLUTIO | | | hazardous waste violation | 2021 | $27,000 |
| Aera Energy LLC | Shell PLC | oil and gas | water pollution violation | 2002 | $15,000 |
| Aera Energy - Taylor Lease | Shell PLC | oil and gas | water pollution violation | 2006 | $5,000 |
| AEI-KAARS DRILLING VENTURES | | | drinking water violation | 2002 | $15,000 |
| AEGIS ENVIRONMENTAL, INC. | | | environmental violation | 2001 | $13,500 |
| Aegean Shipping Management, S.A. | | | environmental violation | 2017 | $2,000,000 |
| Adya, Inc. | | | environmental violation | 2023 | $10,000 |
| ADVENTHEALTH | AdventHealth | healthcare services | hazardous waste violation | 2018 | $80,000 |
| ADVANTAGE RESOURCES INC | | | drinking water violation | 2013 | $58,391 |
| ADVANTAGE POWDER COATINGS | | | environmental violation | 2023 | $5,000 |
| ADVANTAGE METAL POWDERS, INC (SB) | | | environmental violation | 2011 | $9,250 |
| Advanced Windows Inc. | | | environmental violation | 2018 | $67,180 |
| ADVANCED WINDOW, INC. | | | lead violation | 2018 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $67,180 |
| ADVANCED URETHANE TECHNOLOGIES | | | environmental violation | 2013 | $44,690 |
| Advanced Sterilization Products, Div of Ethicon | Johnson & Johnson | pharmaceuticals | environmental violation | 2014 | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $136,800 |
| Advanced Sterilization Products | Johnson & Johnson | pharmaceuticals | environmental violation | 2014 | $136,800 |
| ADVANCED SILICON MATERIALS LLC | | | environmental violation | 2000 | $5,000 |
| Advanced Resource Recovery (Inkster) | | | environmental violation | 2008 | $23,262 |
| Advanced Recovery Inc. (SB) | | | hazardous waste violation | 2014 | $25,000 |
| Advanced Powder Solutions, Inc. | | | hazardous waste violation | 2022 | $345,387 |
| ADVANCED PHOTONIX, INC. | | | air pollution violation | 2000 | $20,000 |
| ADVANCED PETROLEUM, INC. DBA ADVANCED OIL (SB) | | | hazardous waste violation | 2006 | $11,074 |
| Advanced Monolythic Ceramics, Inc. (SB) | | | hazardous waste violation | 2010 | $33,000 |
| Advanced Materials Technologies Inc. | | | air pollution violation | 2003 | $62,500 |
| Advanced Industrial Products, Inc. (SB) | | | air pollution violation | 2009 | $6,900 |
| Advanced Heat Treat Corp. | | | environmental violation | 2023 | $85,000 |
| Advanced Heat Treat Corp | | | air pollution violation | 2023 | $85,000 |
| Advanced Grinding Inc. (SB) | | | hazardous waste violation | 2005 | $8,800 |
| Advanced Fluids, Inc. (Cleveland, OH) | | | environmental violation | 2012 | $40,000 |
| Advanced Flow Engineering, Inc. | | | air pollution violation | 2021 | $250,000 |
| ADVANCED FINISHING SYSTEMS, INC (SB) | | | hazardous waste violation | 2013 | $10,000 |
| Advanced Fiber Technology (Bucyrus, OH) | | | environmental violation | 2011 | $52,174 |
| Advanced Environmental Technical Services (AETS) | | | hazardous waste violation | 2003 | $50,000 |
| Advanced Environmental Services, Inc | | | environmental violation | 2024 | $5,000 |
| ADVANCED ELECTRONICS, INC. | | | water pollution violation | 2003 | $70,000 |
| ADVANCED DISPOSAL SERVICES PECAN ROW LANDFILL, LLC | Waste Management Inc. | waste management and environmental services | environmental violation | 2015 | $30,000 |
| ADVANCED DISPOSAL SERVICES - ARBOR HILLS LANDFILL | Waste Management Inc. | waste management and environmental services | air pollution violation | 2019 | $50,000 |
| ADVANCED DIESEL SOLUTIONS LLC | | | air pollution violation | 2021 | $55,000 |
| ADVANCED DESIGN & PACKAGING, INC. | | | environmental violation | 2004 | $10,632 |
| Advanced Concrete (Waunakee, WI) | | | environmental violation | 2012 | $56,194 |
| Advanced Composites Group Inc., Tulsa, Oklahoma | | | environmental violation | 2011 | $6,000 |
| ADVANCED COATINGS TECHNIQUES INC | | | air pollution violation | 2005 | $200,000 |
| Advanced Coating and Silkscreening | | | air pollution violation | 2003 | $13,800 |
| Advanced Circuit Technologies, Inc. (SB) | | | environmental violation | 2015 | $6,200 |
