Middlesex County contains 572 EPA-regulated facilities, 40 of which are currently flagged for significant noncompliance. The county also hosts 14 Superfund sites and 76 TRI chemical reporters. EPA has assessed $24.5M in lifetime penalties and TRI reporters disclosed roughly 193.7k lb of on-site releases. That facility count is well above the Massachusetts state average of 60 per county.
| Site | City | Status |
|---|---|---|
| Nuclear Metals Inc | Concord | Cleanup underway |
| Olin Chemical | Wilmington | Listed on NPL |
| Industri Plex | Woburn | Construction complete |
| Wells G H | Woburn | Cleanup underway |
| Nyanza Chemical Waste Dump | Ashland | Cleanup underway |
| Silresim Chemical Corp | Lowell | Ready for anticipated reuse |
| Iron Horse Park | Billerica | Ready for anticipated reuse |
| Charles George Reclamation Trust Landfill | Tyngsborough | Ready for anticipated reuse |
| W R Grace Co Inc Acton Plant | Acton | Ready for anticipated reuse |
| Naval Weapons Industrial Reserve Plant | Bedford | Ready for anticipated reuse |
| Natick Laboratory Army Research Development And Engineering Center | Natick | Ready for anticipated reuse |
| Sutton Brook Disposal Area | Tewksbury | Ready for anticipated reuse |
| Fort Devens | Fort Devens | Cleanup underway |
| Hanscom Field Hanscom Air Force Base | Bedford | Ready for anticipated reuse |