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@USEPA

U.S. Environmental Protection Agency

Protecting Human Health and the Environment
README.md

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The US Environmental Protection Agency's mission is to protect human health and the environment. We develop models, tool, data sets, libraries, and applications to help serve our mission.

As part of the government's open source initiative, we publish software here and are open to recieving contributions depending on the project. Please see each repository's CONTRIBUTING.md file for how you can help.

Check out EPA's public open job postings usajobs.gov.

Here are some interesting topics to explore:

  • ord -- EPA's office of research and development develops models and tools to study environmental issues
  • ow -- EPA's office of water studies and regulates the US's waterways
  • oar -- EPA's Office of Air and Radiation studies and regulates air pollution and emissions

Pinned Loading

  1. WNTR WNTR Public

    An EPANET compatible python package to simulate and analyze water distribution networks under disaster scenarios.

    Python 407 215

  2. CMAQ CMAQ Public

    Code for U.S. EPA’s Community Multiscale Air Quality Model (CMAQ) for estimating ozone, particulates, toxics, and deposition of acids and nutrients at neighborhood to global scales.

    Fortran 344 224

  3. Stormwater-Management-Model Stormwater-Management-Model Public

    Dynamic hydrology-hydraulic water quality simulation model for stormwater, wastewater, and combined sewer collection systems

    C 318 211

Repositories

Showing 10 of 664 repositories
  • EPATADA Public

    This R package can be used to compile and evaluate Water Quality Portal (WQP) data for samples collected from surface water monitoring sites on streams and lakes. It can be used to create applications that support water quality programs and help states, tribes, and other stakeholders efficiently analyze the data.

    USEPA/EPATADA’s past year of commit activity
    R 65 CC0-1.0 23 105 (7 issues need help) 4 Updated Jan 27, 2026
  • e-manifest Public

    API services documentation and reference material for the e-Manifest hazardous waste tracking system

    USEPA/e-manifest’s past year of commit activity
    HTML 32 CC0-1.0 24 2 0 Updated Jan 27, 2026
  • TADAShiny Public

    TADAShiny is a R Shiny application (link to web version below) built on top of the TADA R Package (https://github.com/USEPA/TADA). It provides a user friendly, web accessible interface.

    USEPA/TADAShiny’s past year of commit activity
    R 19 CC0-1.0 8 26 1 Updated Jan 27, 2026
  • code-json-generator Public Forked from emartinez-usgs/code-json-generator

    Automation that scrapes USEPA github and provides that metadata for code.gov

    USEPA/code-json-generator’s past year of commit activity
    JavaScript 2 MIT 10 0 0 Updated Jan 27, 2026
  • campdRShinyDataSource Public
    USEPA/campdRShinyDataSource’s past year of commit activity
    R 3 MIT 2 0 0 Updated Jan 27, 2026
  • play-freeboard Public

    Retrieve location-specific storm event data from NOAA's Precipitation Frequency Data Server. Use data to check freeboard for secondary containment berms in compliance with Spill Prevention, Control, and Countermeasure Plan (SPCC Plan) regulations.

    USEPA/play-freeboard’s past year of commit activity
    Python 1 MIT 0 0 0 Updated Jan 26, 2026
  • TADACommunityHub Public

    A collaborative hub where TADA users share and maintain information for custom workflows (e.g., state, tribal, territory, EPA, or other entities). For example, it includes user-contributed criteria and methodologies templates to support reproducible and efficient analyses.

    USEPA/TADACommunityHub’s past year of commit activity
    R 1 CC0-1.0 0 2 2 Updated Jan 26, 2026
  • EnviroAtlas_v4 Public

    EnvrioAtlas migration to JS4. Easy to use, interactive mapping application to access hundreds of maps showing environmental data

    USEPA/EnviroAtlas_v4’s past year of commit activity
    Svelte 2 MIT 0 0 0 Updated Jan 26, 2026
  • spmodel Public

    spmodel: Spatial Statistical Modeling and Prediction in R

    USEPA/spmodel’s past year of commit activity
    R 22 GPL-3.0 4 0 0 Updated Jan 26, 2026
  • IntraCMS Public

    US EPA Intranet CMS

    USEPA/IntraCMS’s past year of commit activity
    CSS 6 MIT 3 0 0 Updated Jan 26, 2026
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