Sites in Wisconsin
- Algoma Municipal Landfill: Algoma, WI
- Amcast Industrial Corporation: Cedarburg, WI
- Ashland/northern States Power Lakefront: Ashland, WI
- Better Brite Plating Co. Chrome And Zinc Shops: De Pere, WI
- City Disposal Corp. Landfill: Dunn, WI
- Delavan Municipal Well #4: Delavan, WI
- Eau Claire Municipal Well Field: Eau Claire, WI
- Hagen Farm: Stoughton, WI
- Hechimovich Sanitary Landfill: Williamstown, WI
- Hunts Disposal Landfill: Caledonia, WI
- Janesville Ash Beds: Janesville, WI
- Janesville Old Landfill: Janesville, WI
- Kohler Co. Landfill: Kohler, WI
- Lauer I Sanitary Landfill: Menomonee Falls, WI
- Lemberger Landfill, Inc.: Whitelaw, WI
- Lemberger Transport & Recycling: Franklin Township, WI
- Madison Metropolitan Sewerage District Lagoons: Blooming Grove, WI
- Master Disposal Service Landfill: Brookfield, WI
- Mid-state Disposal, Inc. Landfill: Cleveland Township, WI
- Moss-american Co., Inc. (kerr-mcgee Oil Co.): Milwaukee, WI
- Muskego Sanitary Landfill: Muskego, WI
- N.w. Mauthe Co., Inc.: Appleton, WI
- National Presto Industries, Inc.: Eau Claire, WI
- Oconomowoc Electroplating Co., Inc.: Ashippin, WI
- Onalaska Municipal Landfill: Onalaska, WI
- Penta Wood Products: Daniels, WI
- Refuse Hideaway Landfill: Middleton, WI
- Ripon City Landfill: Fond Du Lac County, WI
- Sauk County Landfill: Excelsior, WI
- Schmalz Dump: Harrison, WI
- Scrap Processing Co., Inc.: Medford, WI
- Sheboygan Harbor & River: Sheboygan, WI
- Spickler Landfill: Spencer, WI
- Stoughton City Landfill: Stoughton, WI
- Tomah Armory: Tomah, WI
- Tomah Municipal Sanitary Landfill: Tomah, WI
- Waste Management Of Wisconsin, Inc. (brookfield Sanitary Landfill): Brookfield, WI
- Wausau Ground Water Contamination: Wausau, WI