- A.T. Environmental, Inc.
- Acuity Environmental Solutions
- Allegion (Schlage Lock Company LLC))
- Allison Transmission, Inc.
- AP Engineering & Consulting, Inc.
- ARaymond Tinnerman Automotive
- AstraZeneca Pharmaceuticals
- BHC, Inc.
- BorgWarner Propulsion Systems, LLC (fka Delphi Kokomo Morgan Street)
- BorgWarner Technologies Services, LLC (fka Delphi Kokomo Technical Center)
- Buckingham Companies
- Carrier Corporation
- Caterpillar Lafayette Engine Center
- Caterpillar Reman Powertrain, Indiana LLC
- CBRE
- Christopher B. Burke Engineering
- Christopher B. Burke Engineering – Indianapolis
- Christopher B. Burke Engineering – South Bend
- Christopher B. Burke Engineering – Columbus
- Christopher B. Burke Engineering – Crown Point
- Cornerstone Environmental, Health and Safety, Inc.
- Covanta Indianapolis, Inc.
- Covestro (fka DSM Coating Resins, Inc)
- Criterion Catalysts & Technologies L.P.
- Cummins Inc.
- Cummins Inc. - Seymour
- Cummins Inc. - Columbus
- Decatur Plastic Products
- Duke Energy Indiana
- Elanco – Clinton Laboratories
- Electro-Spec, Inc.
- Eli Lilly and Company
- Elkhart Plastics LLC
- Elkhart Plastics LLC – Middlebury
- Elkhart Plastics LLC – South Bend
- Encamp, Inc.
- ERM
- Evonik Corporation – Tippecanoe Laboratories
- Fort Wayne Assembly (General Motors)
- GHD Services, Inc.
- General Motors Bedford Casting
- General Motors Components Holdings, LLC
- Grede
- Grundfos (Formerly Peerless Pump Company)
- Heidelburg Materials Midwest Aggregates, Inc.
- Helmer Scientific
- Hitachi Astemo Greenfield, LLC (fka Keihin Indiana Manufacturing)
- Honda Manufacturing of Indiana
- Indiana Department of Environmental Management
- International Paper - Newport Mill
- KERAMIDA Inc.
- Kimball Electronics - Jasper
- Kimball International, Inc.
- Legrand AV, Inc. (formally Da-Lite Screen/Milestone AV)
- M&C Tech Indiana
- Madison Chemical Co., Inc.
- Madison Precision Products
- Marion Metal Center (General Motors)
- MasterBrand Cabinets, Inc.
- MasterGuard Corporation
- Mead Johnson Nutrition
- Midwestern Pet Foods, Inc.
- Mitsubishi Turbocharger and Engine America, Inc. (fka Mitsubishi Heavy Industries Climate Control)
- MPI Corp – Metals Group (Materials Processing)
- Mundell & Associates, Inc.
- NACHI America, Inc.
- Nestlé USA Inc. – Anderson Beverage
- New Castle Stainless Plate LLC
- Nishikawa Cooper LLC
- Nishikawa Cooper LLC – Bremen
- Nishikawa Cooper LLC – Topeka
- NSWC Crane (Naval Surface Warfare Center)
- NTN Driveshaft, Inc.
- OFS Brands, Inc.
- Pace Analytical LLC – Farmersburg (fka McCoy & McCoy Labs)
- Pace Analytical LLC - Indianapolis
- PK USA
- PSG Energy Group
- Purdue Manufacturing Extension Partnership
- Purdue University Environmental and Ecological Engineering (EEE)
- Ramboll Environ US Corporation
- Raytheon Technologies, Fort Wayne
- Red Spot Paint & Varnish Co., Inc
- Roche Diagnostics Operations Incorporated
- Rolls-Royce Corporation
- SABIC Innovative Plastics, Mt. Vernon, LLC
- SES Environmental
- SESCO Group
- SME
- SRG Global, Inc.
- St. Joseph Energy Center
- Terra Vitae Environmental Solutions
- Thursday Pools
- Toyota Boshoku Indiana
- Toyota Material Handling, Inc.
- Toyota Motor Manufacturing, Indiana, Inc.
- TRC Environmental
- Trinity Consultants LLC
- Uniseal, Inc.
- Versteel
- Vertex Modernization and Sustainment LLC
- Wisdom Environmental
- Youth Fair Chance/Asset Recycling
Partners for Pollution Prevention Members Map, August 2023 [PDF]