The Environmental Justice Analysis Multisite tool lets you easily and quickly see residential population and environmental information aggregated within and across hundreds or thousands of places, all at the same time.
What Can You Do with EJAM?
EJAM lets you specify the places to analyze in several ways – uploading a table of point locations (latitude/longitude), picking facilities by industry category or ID, uploading shapefiles or lists of Census FIPS codes, or clicking on a map to specify one or more points – and it returns a summary report comparing residents and environmental conditions at those places to the rest of the country.
What’s New in v3.2022.2 (August 2026)
The web app is quicker: the Details tab’s Site-by-Site table appears in under a second for a 1,000-site analysis instead of six, PDF reports finish seven seconds sooner, and County reports no longer pause to download boundaries.
The community report gained rows showing the share of residents whose block group holds a school, hospital, or place of worship, or overlaps a Tribal area, impaired waters, or a disadvantaged community, each compared to the US and State average. Those ratio columns now show by default in the public app, and ?advanced=TRUE opens the Advanced Settings tab.
Fixes: the EJScreen “Send to EJAM” handoff no longer crashes, saved reports are no longer empty when given a filename, zero-population sites work, per-site API links carry the right site number.
A code-and-docs patch; packaged data unchanged. See NEWS.md.
Status of EJAM package in 2026
See ejanalysis.org/status for more information.
In 2025, content related to what had been the USEPA-hosted open source R package EJAM was archived.
Ongoing development since then is not associated with EPA, and that development including any open source contributions, has taken place in a separate repository, called Public-Environmental-Data-Partners/EJAM, a non-EPA, detached fork.
documentation
See ejanalysis.org/ejamdocs for current documentation.
datasets
Until mid-2025, datasets had been in a repository archived and/or unpublished in mid-2025 (USEPA/ejamdata) with no plans for it to be further updated by EPA.
web app hosting
A (non-EPA) version of the EJAM web app may be found from within the EJSCREEN app (at the bottom of the list under the “Tools” tab in EJSCREEN), or directly via this link: ejanalysis.org/ejamapp
For information about how to host the web app, see Deploying the Web App