Sussex County, NJ
The federal environmental record for Sussex County (population 146,132): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
3
Superfund NPL sites
9
federal cleanup sites
5
PFAS-detecting water systems
2
TRI facilities
60
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| A. O. Polymer | Sparta Township | on the NPL | 09/08/1983 |
| Mansfield Trail Dump | Byram | on the NPL | 03/10/2011 |
| Metaltec/Aerosystems | Franklin Borough | on the NPL | 09/08/1983 |
Drinking water: PFAS testing
Public water systems serving Sussex with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| HOPATCONG WATER DEPT NJ1912001 | PFBA: 11.6 ng/L PFPeA: 10.3 ng/L PFOA: 9.9 ng/L | above final limit |
| SPARTA TWP WATER UTILITY - LAKE MOHAWK NJ1918004 | PFPeA: 14.4 ng/L PFBS: 12.9 ng/L PFOS: 9.3 ng/L | above final limit |
| STANHOPE W DEPT NJ1919001 | PFOA: 12.2 ng/L PFOS: 11.4 ng/L PFBS: 6.5 ng/L | above final limit |
| HAMBURG BOARD OF PUBLIC NJ1909001 | PFBS: 7.9 ng/L PFPeA: 5.2 ng/L PFHxA: 5 ng/L | detected |
| SUEZ WATER NEW JERSEY VERNON VALLEY NJ1922026 | PFPeA: 10.9 ng/L PFHxA: 6.7 ng/L PFBS: 5.1 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
2 facilities in Sussex filed TRI reports for 2024, totalling 23 lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| COSMED OF NEW JERSEY | FRANKLIN | Ethylene oxide | 21 lb |
| DIAMOND SAND & GRAVEL INC. | SPARTA | Lead And Lead Compounds | 2 lb |
Underground fuel tanks
EPA's UST Finder records 469 tank facilities in Sussex: 307 tanks in service and 1,509 closed. 339 fuel releases are on record, of which 60 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Sussex as Zone 1, the highest predicted indoor radon levels (over 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Sussex, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- A. O. POLYMERSPARTA
- ACCURATE FORMINGHAMBURG
- AMES RUBBER CORP. WANTAGE PLANTSUSSEX
- BALDWIN TRANSPORTATION INCVERNON
- HARDYSTON TOWNSHIP DEPARTMENT OF PUBLIC WORKSHARDYSTON TOWNSHIP
- MANSFIELD TRAIL DUMPBYRAM
- METALTEC/AEROSYSTEMSFRANKLIN BOROUGH
- MKY WOLF LAKE SITEANDOVER
- NY SUSQUEHANNA & WESTERN RR PROPERTYSPARTA