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EJSCREEN: Environmental Justice Screening and Mapping Tool

EPA Tool Comparison Chart

EPA Tool Comparison Chart
Major Focus National environmental justice screening tool that combines demographic information and environmental data to highlight potential places for further review. National screening evaluation of inhalation air toxics risks. Suite of interactive tools and resources on ecosystem services – the benefits people receive from nature.
Output Interactive map, census tract resolution of air toxics emissions, estimates of cancer and noncancer risks Issue profiles, maps, community comparison tables, links to additional information and potential solutions   Demographic maps, community comparisons, environmental justice indexes.
Maps Yes Yes Yes
Geospatial Analysis Tools Yes Yes Yes
Community Comparison Tables Yes    
Screening Indices Yes   Yes
EPA Regulated Facility Location Yes Yes  
Ecosystem Services     Yes
Air Toxics Yes Yes  
PM and Ozone Yes   Yes
Water Quality Yes   Yes
Demographics Yes   Yes
Health-Based Output Yes Yes Yes
Add Connecting Technology (Web Services) Yes   Yes
Ability to Add Own Data     Yes
Ability to Download Data   Yes Yes

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What are key differences between the EPA screening tools?

The focus of the EJSCREEN screening tool is to assist stakeholders in making informed decisions about potential environmental justice issues by identifying the locations of potentially overburdened and vulnerable populations. EJSCREEN output includes environmental justice indexes that combine demographic variables with a single environmental indicator. The index provides a comparison between areas. The EJSCREEN tool can be found at

NATA is a national assessment that estimates cancer and noncancer risks from inhalation of air toxics. NATA is intended as a screening tool to help users prioritize pollutants, types of emission sources, and locations of interest for further study. NATA is also incorporated into other Agency screening tools, including EJSCREEN and C-FERST/T-FERST. The NATA tool can be found at

The focus of EnviroAtlas is to provide data, informational resources, and tools to improve the broader understanding of ecosystem services, or ‘nature’s benefits’. EnviroAtlas includes an interactive mapping application that provides over 300 maps, including demographics, which users can explore and use in education, research, and the decision-making process. EnviroAtlas provides maps for the entire nation, as well as more fine-scale maps for use at the community level in selected areas. EnviroAtlas can be found at

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How do I know which tool to use?

The screening tool you select depends on your main area of interest.

  • Those interested in how the environmental quality differs by demographics will want to start with EJSCREEN.
  • Those primarily interested in inhalation risks and pollutant-specific assessment may find NATA to be the best tool.
  • Those interested in the benefits humans receive from nature, how a decision may impact their availability, and potential effects on human health and well-being might use EnviroAtlas.
  • These tools can be complimentary.

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