New London County contains 291 EPA-regulated facilities, 17 of which are currently flagged for significant noncompliance. The county also hosts 1 Superfund sites and 10 TRI chemical reporters. EPA has assessed $0 in lifetime penalties and TRI reporters disclosed roughly 10.9k lb of on-site releases. That facility count is well above the Connecticut state average of 96 per county.
| Site | City | Status |
|---|---|---|
| New London Submarine Base | New London | Cleanup underway |
| Facility | City | On-site (lb) | Status |
|---|---|---|---|
| Americas Styrenics Allyns Point Plant | Gales Ferry | 9.9k | Compliant |
| Unc Naval Products | Norwich | 476 | Compliant |
| Wyman-Gordon Investment Castings, Incorporated | Groton | 391 | Compliant |
| Electric Boat Company | Groton | 75 | Compliant |
| Doncasters Inc Precision Castings New England | Groton | 35 | Compliant |
| Facility | City | Penalties | Last Inspected |
|---|---|---|---|
| Lakeside Manor Apts | Montville | $0 | |
| Round Hill Llc | Preston | $0 | |
| Lyme Consolidated School-Treatment Plant | Old Lyme | $0 | |
| Kofkoff Egg Farm | Bozrah | $0 | |
| Freedom Village Elderly Housing | Montville | $0 | |
| Colchester Courtyards | Colchester | $0 | |
| Ox Owner, Llc. | Uncasville | $0 | |
| Target Store T2433 | Lisbon | $0 | 2023-02-23 |
| Thayer Building | Norwich | $0 | |
| Flanders Run Association, Inc. | East Lyme | $0 | |
| Mile Creek Apartments | Old Lyme | $0 | |
| Pondcliff Condominium Association | Niantic | $0 | |
| Bellissimo Grande | North Stonington | $0 | |
| U.s. Naval Submarine Base New London (Subasenlon) | Groton | $0 | 2025-07-24 |
| Eastport - West-Treatment Plant | Old Lyme | $0 | |
| Aces High Rv Park | East Lyme | $0 | |
| Hilltop Inn & Suites | North Stonington | $0 |