TOXMAP is a geographic information system (GIS) from the United States National Library of Medicine (NLM) that uses maps of the United States to help users explore data from the United States Environmental Protection Agency's (EPA) Toxics Release Inventory (TRI) and Superfund programs with visual projections and maps.[1][2]

TOXMAP helps users create nationwide, regional, or local area maps showing where TRI chemicals are released on-site into the air, water, ground, and by underground injection, as reported by industrial facilities in the United States.[3] It also identifies the releasing facilities, color-codes release amounts for a single year or year range, and provides multi-year aggregate chemical release data and trends over time, starting with 1988. Maps also can show locations of Superfund sites on the Agency for Toxic Substances and Disease Registry National Priorities List (NPL), which lists all chemical contaminants present at these sites.

There are two versions of TOXMAP available from its home page: the classic version of TOXMAP released in 2004 and, a newer version released in 2014 that is based on Adobe Flash/Apache Flex technology. In addition to many of the features of TOXMAP classic, the new version provides an improved map appearance and interactive capabilities as well as a more current GIS look-and-feel. This includes seamless panning, immediate update of search results when zooming to a location, two collapsible side panels to maximize map size, and automatic size adjustment after a window resize. The new TOXMAP also has improved U.S. Census layers and availability by Census Tract (2000 and 2010), Canadian National Pollutant Release Inventory (NPRI) data, U.S. commercial nuclear power plants, as well as improved and updated congressional district boundaries.

TOXMAP classic users may search the system by location (such as city, state, or ZIP code), chemical name, chemical name fragment, release medium, release amount, facility name and ID, and can filter results to those residing within a pre-defined or custom geographic region.

Search results may be brought up in Google Maps or Google Earth, or saved for use in other tools. TOXMAP also overlays map data such as U.S. Census population information, income figures from the Bureau of Economic Analysis, and health data from the National Cancer Institute and the National Center for Health Statistics.[4]

The data shown in TOXMAP comes from:[5]


  1. "TOXMAP®:online toxicology maps". United States February 7, 2011. Retrieved October 27, 2011.
  2. "TOXMAP®". Genetic Engineering & Biotechnology News. August 2005. Retrieved October 27, 2011.
  3. Hochstein, Colette; Szczur, Marti (2006). "TOXMAP: a GIS-based gateway to environmental health resources". Medical reference services quarterly. 25 (3): 13–31. doi:10.1300/J115v25n03_02. PMC 2703818. PMID 16893844.
  4. "TOXMAP Fact Sheet". United States National Library of Medicine. January 14, 2011. Retrieved May 19, 2011.
  5. "What data sources does TOXMAP use?". United States National Library of Medicine. July 26, 2010. Retrieved May 5, 2011.

Further reading

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