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This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

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EPA ExpoBox (A Toolbox for Exposure Assessors)

  • ExpoFIRST Scenarios Tool

    ExpoFIRST (Version 2.1) helps to quickly and easily create scenarios where people might come into contact with harmful chemicals and pathogens. 
  • EPA ExpoKids

    ExpoKids is a tool that shows how much people might be exposed to certain chemicals or pathogens at different stages of life. 
  • EPA ExpoBox

    Learn more about ExpoBox from the six topic areas below. Or Search the Toolbox to find the latest tools and resources.
  • EPA EcoBox

    ExpoBox users, did you know there is also a Toolbox for Ecological Risk Assessors?

EPA’s EXPOsure toolBOX is a toolbox that helps people assess environmental exposure to harmful chemicals and pathogens. It is a collection of tools that links to different resources. EPA ExpoBox is organized based on the six tool sets listed below.  

Approaches

  • Approaches
    • Direct Measurement (Point-of-Contact)
    • Indirect Estimation (Scenario Evaluation)
    • Exposure Reconstruction (Biomonitoring and Reverse Dosimetry)

Media

  • Media
    • Air
    • Water and Sediment
    • Soil and Dust
    • Food
    • Aquatic Biota
    • Consumer Products

Routes

  • Routes
    • Inhalation
    • Ingestion
    • Dermal

Learn More

  • Basic Information
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Tiers and Types

  • Tiers and Types
    • Screening-Level and Refined
    • Deterministic and Probabilistic
    • Aggregate and Cumulative

Lifestages and Populations

  • Lifestages and Populations
    • General Population
    • Residential Consumer
    • Occupational Workers
    • Lifestages
    • Highly Exposed

Chemical Classes

  • Chemical Classes
    • Pesticides
    • Other Organics
    • Inorganics and Fibers
    • Nanomaterials

Other Tools

  • Exposure Factors
  • ExpoFIRST
  • Tutorials
  • Glossaries
  • Unit Conversions
  • Uncertainty and Variability
Contact Us about ExpoBox to ask a question, provide feedback, or report a problem.
Last updated on January 14, 2025
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