Wisconsin hosts 37 Superfund cleanup sites, 903 facilities reporting to EPA's Toxic Release Inventory, and 119 facilities currently in significant noncompliance with federal environmental laws. EPA has assessed $207.7M in lifetime penalties across these facilities, and TRI reporters released roughly 12.1M pounds of regulated chemicals on-site in the latest reporting year. The single largest on-site releaser is Mullins Cheese Factory-300 in Mosinee, reporting 1.6M lb to EPA.
| Site | City | Status |
|---|---|---|
| Algoma Municipal Landfill | Algoma | Ready for anticipated reuse |
| Amcast Industrial Corporation | Cedarburg | Listed on NPL |
| Ashland Northern States Power Lakefront | Ashland | Ready for anticipated reuse |
| Better Brite Plating Co Chrome And Zinc Shops | De Pere | Ready for anticipated reuse |
| City Disposal Corp Landfill | Dunn | Ready for anticipated reuse |
| Delavan Municipal Well 4 | Delavan | Ready for anticipated reuse |
| Fox River Nrda Pcb Releases | Green Bay | Cleanup underway |
| Hagen Farm | Stoughton | Ready for anticipated reuse |
| Hechimovich Sanitary Landfill | Williamstown | Construction complete |
| Hunts Disposal Landfill | Caledonia | Ready for anticipated reuse |
| Janesville Ash Beds | Janesville | Ready for anticipated reuse |
| Janesville Old Landfill | Janesville | Ready for anticipated reuse |
| Kohler Co Landfill | Kohler | Ready for anticipated reuse |
| Lauer I Sanitary Landfill | Menomonee Falls | Ready for anticipated reuse |
| Lemberger Landfill Inc | Whitelaw | Ready for anticipated reuse |
| Lemberger Transport Recycling | Franklin Township | Ready for anticipated reuse |
| Madison Metropolitan Sewerage District Lagoons | Blooming Grove | Ready for anticipated reuse |
| Master Disposal Service Landfill | Brookfield | Ready for anticipated reuse |
| Mid State Disposal Inc Landfill | Cleveland Township | Ready for anticipated reuse |
| Moss American Co Inc Kerr Mcgee Oil Co | Milwaukee | Ready for anticipated reuse |
| Muskego Sanitary Landfill | Muskego | Ready for anticipated reuse |
| N W Mauthe Co Inc | Appleton | Ready for anticipated reuse |
| National Presto Industries Inc | Eau Claire | Ready for anticipated reuse |
| Oconomowoc Electroplating Co Inc | Ashippun | Construction complete |
| Onalaska Municipal Landfill | Onalaska | Construction complete |
| Penta Wood Products | Daniels | Construction complete |
| Refuse Hideaway Landfill | Middleton | Ready for anticipated reuse |
| Ripon City Landfill | Fond Du Lac County | Construction complete |
| Sauk County Landfill | Excelsior | Construction complete |
| Schmalz Dump | Harrison | Ready for anticipated reuse |
| Sheboygan Harbor River | Sheboygan | Construction complete |
| Spickler Landfill | Spencer | Ready for anticipated reuse |
| Stoughton City Landfill | Stoughton | Ready for anticipated reuse |
| Tomah Municipal Sanitary Landfill | Tomah | Ready for anticipated reuse |
| Unity Auto Mart | Unity | Listed on NPL |
| Waste Management Of Wisconsin Inc Brookfield Sanitary Landfill | Brookfield | Construction complete |
| Wausau Ground Water Contamination | Wausau | Construction complete |