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@USEPA

U.S. Environmental Protection Agency

Protecting Human Health and the Environment

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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 usabjos.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 349 200

  2. CMAQ CMAQ Public

    Code for U.S. EPA’s Community Multiscale Air Quality Model (CMAQ) which helps in conducting air quality model simulations

    Fortran 308 216

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

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

    C 269 183

  4. elevatr elevatr Public

    An R package for accessing elevation data

    R 205 28

Repositories

Showing 10 of 551 repositories
  • govchat Public Forked from Patrick-Davis-MSFT/chatbot-ui

    Customized GenAI chatbot interface for EPA employees

    USEPA/govchat’s past year of commit activity
    TypeScript 1 MIT 8,825 0 0 Updated Apr 14, 2025
  • StreamCatTools Public

    R package to work with the StreamCat API within R and access the full suite of StreamCat catchment and watershed scale metrics for all NHDPlusV2 stream reaches and catchments.

    USEPA/StreamCatTools’s past year of commit activity
    R 31 CC0-1.0 9 20 0 Updated Apr 14, 2025
  • USEPA/surge_morpho_data’s past year of commit activity
    R 0 0 0 0 Updated Apr 14, 2025
  • CompTox-thyroid-httk Public

    This repository accompanies the manuscript by Truong et al., "Interpretation of thyroid-relevant bioactivity data for comparison to in vivo exposures: A prioritization approach for putative chemical inhibitors of in vitro deiodinase activity"

    USEPA/CompTox-thyroid-httk’s past year of commit activity
    HTML 0 1 0 0 Updated Apr 14, 2025
  • CompTox-ToxCast-tcplFit2 Public

    US EPA's tcplfit2: A Concentration-Response Modeling Utility

    USEPA/CompTox-ToxCast-tcplFit2’s past year of commit activity
    R 6 7 25 1 Updated Apr 14, 2025
  • USEPA/ccte-sbom-generator-python’s past year of commit activity
    0 0 0 0 Updated Apr 14, 2025
  • ATtILA2 Public

    Esri ArcGIS toolbox that allows users to easily calculate many common landscape metrics

    USEPA/ATtILA2’s past year of commit activity
    Python 10 4 0 0 Updated Apr 14, 2025
  • MCSimMod Public

    MCSim Models in R

    USEPA/MCSimMod’s past year of commit activity
    C 3 0 0 1 Updated Apr 14, 2025
  • egrid Public

    Emissions & Generation Resource Integrated Database (eGRID)

    USEPA/egrid’s past year of commit activity
    R 12 MIT 8 8 0 Updated Apr 14, 2025
  • EnviroAtlas_v4 Public

    EnvrioAtlas migration to JS4.

    USEPA/EnviroAtlas_v4’s past year of commit activity
    Jupyter Notebook 0 MIT 0 0 0 Updated Apr 14, 2025