Warren County contains 260 EPA-regulated facilities, 11 of which are currently flagged for significant noncompliance. The county also hosts 1 Superfund sites and 6 TRI chemical reporters. EPA has assessed $1.7M in lifetime penalties and TRI reporters disclosed roughly 88.5k lb of on-site releases. That facility count is well above the New Jersey state average of 122 per county.
| Site | City | Status |
|---|---|---|
| Pohatcong Valley Ground Water Contamination | Warren County | Ready for anticipated reuse |
| Facility | City | On-site (lb) | Status |
|---|---|---|---|
| Avantor Performance Materials | Phillipsburg | 46.7k | Penalties |
| Dsm Nutritional Products, Inc. | Belvidere | 41.2k | Penalties |
| Mcwane Ductile - New Jersey | Phillipsburg | 631 | Penalties |
| Thomas & Betts Corp - Amerace Elastimold | Hackettstown | 21 | Compliant |
| Facility | City | Penalties | Last Inspected |
|---|---|---|---|
| Warren Residential Group-Treatment Plant | Trenton | $0 | |
| Washington Boro Wwtp | Washington | $0 | 2025-10-15 |
| Fountain Mall | Blairstown | $0 | |
| Care Environmental Corp | Hackettstown | $0 | |
| Pio Costa Sand & Gravel | Buttzville | $0 | 2022-07-28 |
| Trap Rock Industries -Lambertvl | Delaware Township | $0 | 2023-02-23 |
| Hope Market-Treatment Plant | Hope | $0 | |
| Franklin Twp Volunteer Fire Dept-Treatment Plant | Broadway | $0 | |
| Bill Griffett Sand & Gravel Llc | Belvidere Town | $0 | 2025-03-04 |
| Mobil Mart/Subway-Treatment Plant | Lopatcong | $0 | |
| Mobil/7-Eleven-Treatment Plant | Clinton | $0 |