| Facility Name (Alias/Former Names) | City, State, Country | Program Years |
| Bluff Road Landfill and Composting Facility (Lincoln Bluff Landfill) | Lincoln, NE, USA | |2012| |
| Buzzi-Unicem USA (Lone Star Alternate Fuels; Greencastle WDF Facility) | Greencastle, IN, USA | |2024| |2021| |2020| |2019| |2018| |2017| |2016| |2015| |2014| |2012| |2011| |2008| |2006| |2004| |2000| |
| Catalytic Innovations, LLC (LEMetrix Solutions, LLC) | Rolla, MO, USA | |2012| |2006| |
| Clean Harbors (Lambton-Sarnia Incineration/Landfill) | Corunna, ON, Canada | |2024| |2023| |2022| |2021| |2019| |2018| |2016| |2015| |2014| |2013| |2011| |2010| |2008| |2007| |2006| |2003| |2002| |2000| |1998| |1995| |
| Clean Harbors (Les Services; Safety-Kleen) | Mercier, QC, Canada | |2011| |2010| |2008| |2006| |2003| |2001| |
| Clean Harbors (Lone Mountain; Safety-Kleen; Laidlaw; USPCI; Rollins) | Waynoka, OK, USA | |2024| |2023| |2022| |2021| |2020| |2019| |2018| |2017| |2016| |2015| |2014| |2012| |2011| |2010| |2009| |2007| |2006| |2005| |2004| |2002| |2000| |1997| |
| Cleanaway Waste Management (Lidcombe Liquid Waste Plant; Waste Service NSW) | Homebush Bay, New South Wales, Australia | |2022| |2017| |2002| |
| ERG Environmental Services (Lamps Inc.) | Bowling Green, OH, USA | |2018| |2015| |2014| |2011| |2008| |
| Fortech SA (Lima de Cartago Facility; Solvent Facility; Fortech Microabrasivos S.A.) | Cartago, Cartago, Costa Rica | |2017| |2008| |
| General Environmental Services [RCRA Incinerator] (LWD) | Calvert City, KY, USA | |2003| |2002| |2000| |1998| |1996| |
| General Environmental Services [RCRA S/S Landfill Facility] (LWD) | Calvert City, KY, USA | |2002| |2000| |1998| |
| GFL Environmental (Lafleche Leblanc Soil Recycling Inc) | Moose Creek, ON, Canada | |2018| |
| GFL Environmental (Liquids Waste Division) | Pickering, ON, Canada | |2022| |2018| |
| Heidelberg Materials US Cement (Lehigh Cement; Essroc Cement) | Logansport, IN, USA | |2024| |2023| |2021| |2020| |2018| |2016| |2014| |2013| |2012| |2010| |2008| |2006| |2005| |2003| |2000| |
| La Cart s.r.l. | Rimini, Emilia Romagna, Italy | |2013| |
| La Crosse County Landfill | La Crosse, WI, USA | |2014| |
| LA Filter Recycling | Abbeville, LA, USA | |2020| |2012| |
| La Torrazza SRL | Torrazza Piemonte, Turin, Piedmont, Italy | |2013| |
| La. Fu. Met. S.r.l. | Villastellone, Piedmont, Italy | |2011| |
| Labo Services | Givors, Auvergne-Rhone-Alpes, France | |2012| |
| Lafarge Ciments | Port-la-Nouvelle, Occitanie, France | |2012| |
| Lafarge Midwest (Alpena Cement Plant; Systech) | Alpena, MI, USA | |2017| |
| Lafarge North America | Seattle, WA, USA | |2006| |
| Laidlaw Environmental Services de Mexico (Clean Harbors) | Ciudad Juarez, Chihuahua, Mexico | |2004| |
| Lambert Saltwater Disposal, Inc. (Indian Mounds Ranch SWD) | Lambert, MT, USA | |2011| |
| Lamesch S.A. | Bettembourg, Esch-sur-Alzette, Luxembourg | |2017| |
| Lamp Environmental Industries, Inc (LEI, Inc) | Independence, LA, USA | |2022| |2018| |2014| |
| Lamp Recyclers, Inc. | Green Bay, WI, USA | |2018| |
| Lancaster County SWMA Resource Recovery (Operated by Covanta Energy) | Bainbridge, PA, USA | |2023| |2019| |2014| |2010| |2003| |
| LaRose Scrap & Salvage Intracoastal City | Abbeville, LA, USA | |2012| |2006| |
| Lea County Landfill | Eunice, NM, USA | |2013| |
| Lea Land, LLC | Carlsbad, NM, USA | |2021| |
| LEI, Inc. (Lamp Environmental Industries; Lamp Recyclers of LA, Inc.) | Hammond, LA, USA | |2023| |2022| |2020| |2019| |2018| |2017| |2016| |2015| |2014| |2012| |2010| |2008| |2006| |2005| |2004| |2002| |1999| |
| Liberty Tire Recycling, LLC | Port St. Lucie, FL, USA | |2012| |
| Lighting Resources LLC | Ontario, CA, USA | |2022| |2019| |2015| |2003| |
| Lighting Resources Texas, LLC (Environmental Lamp Recyclers) | Fort Worth, TX, USA | |2023| |2022| |2019| |2016| |
| Lighting Resources, Inc. (Fluorescent Bulb Facility; Special Processes of Arizona) | Phoenix, AZ, USA | |2023| |2017| |
| Lighting Resources, Inc. (Ballast Facility) | Phoenix, AZ, USA | |2022| |2017| |
| Lighting Resources, Inc. | Greenwood, IN, USA | |2023| |2018| |2016| |2006| |
| Lighting Resources, LLC (Airbag Processing Facility) | Johnson City, TN, USA | |2019| |
| Lima Barrel & Drum Co. | Lima, OH, USA | |2006| |
| Lindenschmidt KG | Kreuztal, North Rhine-Westphalia, Germany | |2021| |
| Liquid Environmental Solutions (Industrial Water Services) | Mobile, AL, USA | |2020| |2012| |
| Liquid Environmental Solutions (Resource Recovery Techniques of Arizona) | Phoenix, AZ, USA | |2022| |2019| |2013| |
| Liquid Environmental Solutions (Industrial Water Service; IWS) | Jacksonville, FL, USA | |2024| |2013| |2002| |
| Liquid Environmental Solutions (Industrial Water Service; IWS) | Chicago, IL, USA | |2023| |2016| |2011| |2009| |2005| |
| Liquid Environmental Solutions (LES) | Houston, TX, USA | |2023| |2017| |2011| |2004| |
| Liquid Industrial By-Products (Liquid Industrial Waste Service) | Holland, MI, USA | |2023| |2020| |
| Litong Telecom Company Ltd. (HSK Facility) | Hong Kong, Hong Kong, SAR | |2016| |
| Little Forks Landfill (Cumberland Joint Services Management Authority) | Spring Hill, NS, Canada | |2007| |
| LJP Enterprises, Inc. | North Mankato, MN, USA | |2019| |
| LOCTR Tecnologia de Residuos Ltda. (BMA Technologia Residuos Ltda.) | Belo Horizonte, Minas Gerais, Brazil | |2022| |2013| |
| Lone Star Disposal | Houston, TX, USA | |2016| |
| Loop Recycled Products | Niagara Falls, ON, Canada | |2019| |
| Lorco Petroleum Services | Elizabeth, NJ, USA | |2023| |2020| |2018| |2016| |2013| |2011| |2010| |2007| |2005| |
| Lotus LLC (Norm Disposal Site) | Andrews, TX, USA | |2018| |2015| |2011| |
| LvJie - Qingdao New World | Qingdao, Shandong Province, China | |2007| |
| Lwart Solucoes Ambientais | Lencois Paulista, Sao Paulo, Brazil | |2022| |2016| |
| Lynco Oil Services (Makers Oil Corporation) | Giddings, TX, USA | |2016| |
| MXI Environmental Services (Latex Facility) | Abingdon, VA, USA | |2024| |2019| |
| Safety-Kleen Systems, Inc. (Laidlaw) | Westmorland, CA, USA | |1998| |
| Safety-Kleen Systems, Inc. (Laidlaw) | Dolton, IL, USA | |2024| |2023| |2022| |2021| |2020| |2019| |2018| |2017| |2016| |2015| |2014| |2012| |2011| |2010| |2009| |2008| |2007| |2006| |2005| |2003| |2002| |2001| |2000| |1998| |1996| |
| Safety-Kleen Systems, Inc. (Laidlaw) | North Andover, MA, USA | |2001| |
| Safety-Kleen Systems, Inc. (Linden Recycle Center) | Linden, NJ, USA | |2023| |2022| |2020| |2019| |2018| |2017| |2014| |2012| |2011| |2009| |2007| |2006| |2005| |2002| |2000| |1998| |
| Safety-Kleen Systems, Inc. (Laidlaw) | Hilliard, OH, USA | |1998| |
| Safety-Kleen Systems, Inc. (Laidlaw Waste Systems, Inc.) | Oklahoma City, OK, USA | |2023| |2019| |
| Safety-Kleen Systems, Inc. (Lexington Recycle Center) | Lexington, SC, USA | |2022| |2021| |2019| |2018| |2016| |2013| |2011| |2010| |2007| |2006| |2004| |2000| |1999| |1996| |
| Safety-Kleen Systems, Inc. (Laidlaw) | Pinewood, SC, USA | |1999| |1996| |
| Safety-Kleen Systems, Inc. (Laidlaw Environmental Services, Inc.) | Millington, TN, USA | |2022| |2019| |
| Sita Taylors Road LF (Lyndhurst Landfill) | Dandenong South, Victoria, Australia | |2013| |
| Systech Environmental Corporation (Lafarge) | Fredonia, KS, USA | |2024| |2023| |2022| |2021| |2019| |2018| |2017| |2016| |2015| |2014| |2013| |2012| |2011| |2010| |2009| |2008| |2007| |2006| |2005| |2004| |2002| |2001| |2000| |1998| |
| Systech Environmental Services (Lafarge) | Paulding, OH, USA | |2022| |2019| |2018| |2015| |2013| |2010| |2009| |2007| |2006| |2004| |2002| |2000| |1997| |
| Veolia Environmental Services (Lower Bank View Waste Management Facility) | Liverpool, Merseyside, United Kingdom (England) | |2013| |
| WM McKittrick Facility (Liquid Waste Management, Inc.; McKittrick Waste Treatment Site) | McKittrick, CA, USA | |2023| |2020| |2017| |2015| |2012| |2008| |2003| |2000| |
| WM Reliable Landfill (Livonia Landfill) | Livonia, LA, USA | |2024| |2020| |
