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Map Layer Info

EPA Envirofacts Data - Toxics Release Inventory

What this map layer shows:

The locations of over 49,000 toxics release sites.
opens the U.S. Environmental Protection Agency home page
Background Information
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Toxic substances are defined by the U.S. Environmental Protection Agency (EPA) as those chemicals or mixtures that may present an unreasonable risk of injury to human health or the environment. The Emergency Planning and Community Right to Know Act gives the public the right to know about toxic chemicals being released into the environment. This law requires that facilities in certain industries, which manufacture, process, or use significant amounts of toxic chemicals, report annually on their releases of these chemicals. The reports contain information about the types and amounts of toxic chemicals that are released each year into the air, water, and land, as well as information on the quantities of toxic chemicals sent to other facilities for further waste management. The EPA decides which chemicals will be included in the reporting process, determines the reporting thresholds for chemicals, and maintains toxic release information in a database called the Toxics Release Inventory (TRI). This map layer was produced by the EPA.

The EPA Envirofacts Data - Toxics Release Inventory map layer shows locations of more than 49,000 toxics release sites in the United States, Puerto Rico, and the U.S. Virgin Islands as of May, 2005. Descriptive information includes the facility name and identification number. More detailed information on toxic releases is available from the EPA Toxics Release Inventory Program page, and information on TRI chemicals can be found on the TRI Chemicals page. Definitions of environmental terms can be found in the EPA Terms of Environment.


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Toxics Release Inventory