Northumberland County contains 249 EPA-regulated facilities, 9 of which are currently flagged for significant noncompliance. The county also hosts 0 Superfund sites and 13 TRI chemical reporters. EPA has assessed $764.4k in lifetime penalties and TRI reporters disclosed roughly 165.8k lb of on-site releases. That facility count is near the Pennsylvania state average of 222 per county.
| Facility | City | On-site (lb) | Status |
|---|---|---|---|
| Mt Carmel Cogen Plt | Marion Heights | 82.0k | Compliant |
| Truck Accessories Npdes Stormwater | Milton | 61.8k | Penalties |
| Jeraco Enterprises Inc/Milton Plt | Milton | 13.3k | Compliant |
| Cherokee Pharm Llc/Riverside Boro Plt | Riverside | 7.4k | Penalties |
| Watsontown Brick Co/Watsontown Plt | Watsontown | 1.2k | Compliant |
| Great Dane Trailers | Elysburg | 130 | Compliant |
| Hoeganaes Corp | Watsontown | 66 | Sig. violation |
| Arcos Ind Llc/Mt Carmel Plt | Mount Carmel | 19 | Penalties |
| Keystone Forging Co | Northumberland | 13 | Compliant |
| Facility | City | Penalties | Last Inspected |
|---|---|---|---|
| Mt Carmel Cogen/Culm Fired Cogen Plt | Marion Heights | $98.3k | 2024-01-18 |
| Hoeganaes Corp | Watsontown | $17.9k | 2025-06-24 |
| Truck Accessories Group Llc Dba Tag East | Milton | $0 | 2025-01-08 |
| Ghezzis | $0 | ||
| Penns Tavern | $0 | ||
| Bear Gap Coal N & L Slope Mine | Trevorton | $0 | |
| Pa Waste Transfer Station | Coal Township | $0 | |
| Reading Trevorton 228 Mine | Trevorton | $0 | 2023-02-21 |
| Milton Jellyston Park-Bath House | Milton | $0 |