New Jersey Contamination Data

State Contamination Profile

Elevated Risk Level41,663 documented sites
New Jersey ranks 2nd of 50 states by severity-weighted density — a screening measure of how much documented history sits in the federal record per square mile. That describes the record, not any single yard: the map shows where each documented site actually sits.

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

High-severity counts the top severity tier of the record — the sites most worth checking distances against.

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.

Agricultural 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: High

We checked the federal record around Hudson County1,970 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 CorpUnderground Storage Tanks · ~0.3 km from the county center
  • Ultra Truck Auto PlazaUnderground Storage Tanks · ~0.4 km from the county center
  • Kv Realty CorpUnderground 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: High

We checked the federal record around Essex County2,935 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 AveBrownfields · ~0.6 km from the county center
  • Verizon Business (Wsornj)Underground Storage Tanks · ~0.6 km from the county center
  • Mci Worldcom - W Orange JunctionUnderground 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: High

We checked the federal record around Union County2,228 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 ChurchUnderground Storage Tanks · ~0.3 km from the county center
  • Cranford High SchoolUnderground Storage Tanks · ~0.3 km from the county center
  • Cranford Gulf Service StationUnderground 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: High

We checked the federal record around Bergen County3,972 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 3487Underground Storage Tanks · ~0.1 km from the county center
  • Paramus North LlcUnderground Storage Tanks · ~0.1 km from the county center
  • Fantasia Industrial CorporationBrownfields · ~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: High

We checked the federal record around Middlesex County4,027 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 CenterBrownfields · ~0.6 km from the county center
  • Automatic Data ProcessingUnderground Storage Tanks · ~0.7 km from the county center
  • Mon Eco Industries IncBrownfields · ~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: High

We checked the federal record around Camden County2,322 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 #8310Underground Storage Tanks · ~0.9 km from the county center
  • Quality Landscaping IncUnderground 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

High

2,114 documented sites, most commonly underground storage tanks. Nearest: Old Treatment Plant, ~0.3 km from the county center.

Mercer County

High

1,732 documented sites, most commonly underground storage tanks. Nearest: Aptim-Biotechnology Development & App Grp, ~0.1 km from the county center.

Gloucester County

High

2,056 documented sites, most commonly nitrate. Nearest: South Jersey Technology Park, ~0.4 km from the county center.

Morris County

High

3,005 documented sites, most commonly underground storage tanks. Nearest: Wawa# 8434, ~1.0 km from the county center.

Monmouth County

High

2,514 documented sites, most commonly underground storage tanks. Nearest: Citgo, ~1.8 km from the county center.

Ocean County

High

2,394 documented sites, most commonly underground storage tanks. Nearest: Forked River Elementary School, ~2.0 km from the county center.

Somerset County

High

1,328 documented sites, most commonly underground storage tanks. Nearest: Somerset County Lf, ~0.2 km from the county center.

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25+ data sources analyzed in seconds

EPA FRS CERCLISArcGIS Online UST FinderEPA FRS TRIEPA FRS ACRESEPA UCMR 5USGS Water Quality PortalEPA FRS NPDESUSGS MRDSUSGS NAWQA EPest