Total Sites
41,663
9 federal databases
Severity Density
7.83
Severity-weighted sites per sq mi
High-Severity Sites
1,086
Superfund NPL, PFAS detections + similar top-tier records
Data Sources
EPA, USGS
9 databases checked
Source Breakdown
Top Counties in New Jersey
Hudson County carries New Jersey's densest documented record — 51.50 severity-weighted sites per square mile across 1,970 records, most commonly Underground Storage Tanks, including 43 high-severity sites. Density describes the county's record, not any single parcel.
| County | Sites | Density | Dominant Source |
|---|---|---|---|
| Hudson | 1,970 | 51.50 | Underground Storage Tanks |
| Essex | 2,935 | 29.86 | Underground Storage Tanks |
| Union | 2,228 | 27.11 | Underground Storage Tanks |
| Bergen | 3,972 | 22.23 | Underground Storage Tanks |
| Middlesex | 4,027 | 17.84 | Underground Storage Tanks |
| Camden | 2,322 | 15.00 | Underground Storage Tanks |
| Passaic | 2,114 | 14.66 | Underground Storage Tanks |
| Mercer | 1,732 | 10.49 | Underground Storage Tanks |
| Gloucester | 2,056 | 10.20 | Nitrate |
| Morris | 3,005 | 9.47 | Underground Storage Tanks |
Hudson
Sites
2K
Density
51.5
Source
Underground Storage TanksEssex
Sites
3K
Density
29.9
Source
Underground Storage TanksUnion
Sites
2K
Density
27.1
Source
Underground Storage TanksBergen
Sites
4K
Density
22.2
Source
Underground Storage TanksMiddlesex
Sites
4K
Density
17.8
Source
Underground Storage TanksCamden
Sites
2K
Density
15.0
Source
Underground Storage TanksPassaic
Sites
2K
Density
14.7
Source
Underground Storage TanksMercer
Sites
2K
Density
10.5
Source
Underground Storage TanksGloucester
Sites
2K
Density
10.2
Source
NitrateMorris
Sites
3K
Density
9.5
Source
Underground Storage TanksAgricultural Pesticide Use in New Jersey
In the 2019 federal survey estimates, New Jersey's most-applied agricultural pesticides statewide were Glyphosate, Atrazine and Metolachlor & Metolachlor-S. These estimates describe agricultural land use across the state — context for what's in use around the region, not a reading on any garden's soil.
Pesticide data: USGS NAWQA Pesticide National Synthesis Project (EPest county-level use estimates). Latest available county estimates: 2019.
County-Level Detail in New Jersey
The federal record isn't uniform across a state. Here's what's documented around New Jersey's counties with the densest records — each read from that county's own sites, not the state average. Proximity is information, not a diagnosis; a soil test settles any near neighbor.
Is It Safe to Grow Food in Hudson County?
Federal record: HighWe checked the federal record around Hudson County — 1,970 documented sites across 6 of the 9 source types we track, 43 of them high-severity.
The most significant on record: 39 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Hudson County carries one of the heavier federal records we track — 1,970 documented sites, most of them underground storage tanks. That's a record of the area's history, not a verdict on any one yard: proximity to a documented site is information, not a diagnosis. Before food beds go in, a professional soil test tells you exactly what you're working with — and raised beds with clean imported soil grow well almost anywhere in the meantime.
Documented sites nearest the Hudson County center
- Nel - Kan Corp — Underground Storage Tanks · ~0.3 km from the county center
- Ultra Truck Auto Plaza — Underground Storage Tanks · ~0.4 km from the county center
- Kv Realty Corp — Underground Storage Tanks · ~0.4 km from the county center
These are the closest documented sites to Hudson County's geographic center — a screening reference, not a reading on any specific address. Check your own New Jersey parcel to see what's actually near you.
Is It Safe to Grow Food in Essex County?
Federal record: HighWe checked the federal record around Essex County — 2,935 documented sites across 7 of the 9 source types we track, 115 of them high-severity.
The most significant on record: 102 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Essex County carries one of the heavier federal records we track — 2,935 documented sites, most of them underground storage tanks. That's a record of the area's history, not a verdict on any one yard: proximity to a documented site is information, not a diagnosis. Before food beds go in, a professional soil test tells you exactly what you're working with — and raised beds with clean imported soil grow well almost anywhere in the meantime.
Documented sites nearest the Essex County center
- Verizon West Orange Cev - Mt Pleasant Ave — Brownfields · ~0.6 km from the county center
- Verizon Business (Wsornj) — Underground Storage Tanks · ~0.6 km from the county center
- Mci Worldcom - W Orange Junction — Underground Storage Tanks · ~0.7 km from the county center
These are the closest documented sites to Essex County's geographic center — a screening reference, not a reading on any specific address. Check your own New Jersey parcel to see what's actually near you.
Is It Safe to Grow Food in Union County?
Federal record: HighWe checked the federal record around Union County — 2,228 documented sites across 6 of the 9 source types we track, 37 of them high-severity.
The most significant on record: 35 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Union County carries one of the heavier federal records we track — 2,228 documented sites, most of them underground storage tanks. That's a record of the area's history, not a verdict on any one yard: proximity to a documented site is information, not a diagnosis. Before food beds go in, a professional soil test tells you exactly what you're working with — and raised beds with clean imported soil grow well almost anywhere in the meantime.
Documented sites nearest the Union County center
- First Presbyterian Church — Underground Storage Tanks · ~0.3 km from the county center
- Cranford High School — Underground Storage Tanks · ~0.3 km from the county center
- Cranford Gulf Service Station — Underground Storage Tanks · ~0.5 km from the county center
These are the closest documented sites to Union County's geographic center — a screening reference, not a reading on any specific address. Check your own New Jersey parcel to see what's actually near you.
Is It Safe to Grow Food in Bergen County?
Federal record: HighWe checked the federal record around Bergen County — 3,972 documented sites across 7 of the 9 source types we track, 98 of them high-severity.
The most significant on record: 81 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Bergen County carries one of the heavier federal records we track — 3,972 documented sites, most of them underground storage tanks. That's a record of the area's history, not a verdict on any one yard: proximity to a documented site is information, not a diagnosis. Before food beds go in, a professional soil test tells you exactly what you're working with — and raised beds with clean imported soil grow well almost anywhere in the meantime.
Documented sites nearest the Bergen County center
- Speedway 3487 — Underground Storage Tanks · ~0.1 km from the county center
- Paramus North Llc — Underground Storage Tanks · ~0.1 km from the county center
- Fantasia Industrial Corporation — Brownfields · ~0.2 km from the county center
These are the closest documented sites to Bergen County's geographic center — a screening reference, not a reading on any specific address. Check your own New Jersey parcel to see what's actually near you.
Is It Safe to Grow Food in Middlesex County?
Federal record: HighWe checked the federal record around Middlesex County — 4,027 documented sites across 7 of the 9 source types we track, 116 of them high-severity.
The most significant on record: 101 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Middlesex County carries one of the heavier federal records we track — 4,027 documented sites, most of them underground storage tanks. That's a record of the area's history, not a verdict on any one yard: proximity to a documented site is information, not a diagnosis. Before food beds go in, a professional soil test tells you exactly what you're working with — and raised beds with clean imported soil grow well almost anywhere in the meantime.
Documented sites nearest the Middlesex County center
- East Brunswick Twp Dpw Center — Brownfields · ~0.6 km from the county center
- Automatic Data Processing — Underground Storage Tanks · ~0.7 km from the county center
- Mon Eco Industries Inc — Brownfields · ~0.7 km from the county center
These are the closest documented sites to Middlesex County's geographic center — a screening reference, not a reading on any specific address. Check your own New Jersey parcel to see what's actually near you.
Is It Safe to Grow Food in Camden County?
Federal record: HighWe checked the federal record around Camden County — 2,322 documented sites across 7 of the 9 source types we track, 72 of them high-severity.
The most significant on record: 63 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Camden County carries one of the heavier federal records we track — 2,322 documented sites, most of them underground storage tanks. That's a record of the area's history, not a verdict on any one yard: proximity to a documented site is information, not a diagnosis. Before food beds go in, a professional soil test tells you exactly what you're working with — and raised beds with clean imported soil grow well almost anywhere in the meantime.
Documented sites nearest the Camden County center
- Joseph Lance (Former) — Underground Storage Tanks · ~0.3 km from the county center
- Wawa Food Market #8310 — Underground Storage Tanks · ~0.9 km from the county center
- Quality Landscaping Inc — Underground Storage Tanks · ~0.9 km from the county center
These are the closest documented sites to Camden County's geographic center — a screening reference, not a reading on any specific address. Check your own New Jersey parcel to see what's actually near you.
More New Jersey counties on the federal record
Passaic County
High2,114 documented sites, most commonly underground storage tanks. Nearest: Old Treatment Plant, ~0.3 km from the county center.
Mercer County
High1,732 documented sites, most commonly underground storage tanks. Nearest: Aptim-Biotechnology Development & App Grp, ~0.1 km from the county center.
Gloucester County
High2,056 documented sites, most commonly nitrate. Nearest: South Jersey Technology Park, ~0.4 km from the county center.
Morris County
High3,005 documented sites, most commonly underground storage tanks. Nearest: Wawa# 8434, ~1.0 km from the county center.
Monmouth County
High2,514 documented sites, most commonly underground storage tanks. Nearest: Citgo, ~1.8 km from the county center.
Ocean County
High2,394 documented sites, most commonly underground storage tanks. Nearest: Forked River Elementary School, ~2.0 km from the county center.
Somerset County
High1,328 documented sites, most commonly underground storage tanks. Nearest: Somerset County Lf, ~0.2 km from the county center.
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