Maryland has 22 Superfund sites: 1.7% of the US total of 1,316. That ranks #19 by count and #26 per person (0.35 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/maryland" width="100%" height="440" style="border:2px solid #111" loading="lazy" title="Maryland superfund sites map — InstaMaps"></iframe>Limestone Road · Sand, Gravel and Stone · Kane & Lombard Street Drums · Aberdeen Proving Ground (Michaelsville Landfill) · Aberdeen Proving Ground (Edgewood Area) · Woodlawn County Landfill · Bush Valley Landfill · Spectron, Inc. · Ordnance Products, Inc. · Beltsville Agricultural Research Center (USDA) · Patuxent River Naval Air Station · Indian Head Naval Surface Warfare Center
"Maryland has 22 Superfund sites, #19 in the US by count and #26 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.