An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

EPA EcoBox (A Toolbox for Ecological Risk Assessors)

Picture of Toolbox

Search EPA EcoBox

(A toolbox for
Ecological Risk Assessors)

EPA EcoBox (A Toolbox for Ecological Risk Assessors)

EPA’s Ecological Risk Assessment ToolBox (EPA EcoBox) is a compendium of tools that provides links to guidance documents, databases, models, reference materials, and other related resources.  Information and tools are organized according to 6 topics areas of interest to ecological risk assessors. Each of these tool sets provides information on how these topics are considered within the context of the phases of an Ecological Risk AssessmentHelpEcological Risk AssessmentA process that evaluates the likelihood that adverse ecological effects may occur or are occurring as a result of exposure to one or more stressors. Stressors are defined as any chemical, biological, or physical entity that can induce an adverse response on ecological individuals, populations, communities, or ecosystems. (ERA).