New Jersey has 115 Superfund sites: 8.7% of the US total of 1,316. That ranks #1 by count and #5 per person (1.21 per 100,000 residents) of 51.
Source: EPA National Priorities List, September 2026. Every National Priorities List site in the 50 states and DC, at the EPA’s coordinates. Sites in the territories are left out.
Licence: U.S. government data: no copyright, free to reuse
Local blogs, news sites, parks pages: embed the live interactive map with one snippet. Attribution stays on, that's the whole deal.
<iframe src="https://get-instamaps.com/embed/rankings/superfund-sites/new-jersey" width="100%" height="440" style="border:2px solid #111" loading="lazy" title="New Jersey superfund sites map — InstaMaps"></iframe>A. O. Polymer · American Cyanamid Co. · Bog Creek Farm · Brick Township Landfill · Bridgeport Rental & Oil Services · Burnt Fly Bog · Caldwell Trucking Co. · Chemical Control · Chemsol, Inc. · Combe Fill South Landfill · CPS/Madison Industries · D'Imperio Property
"New Jersey has 115 Superfund sites, #1 in the US by count and #5 per person (EPA National Priorities List, September 2026, mapped by InstaMaps)." Free to quote with a link to this page. Population: US Census 2024 estimates.