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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 341 194

  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 300 214

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

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

    C 256 181

  4. elevatr elevatr Public

    An R package for accessing elevation data

    R 206 28

Repositories

Showing 10 of 514 repositories
  • CompTox-ToxCast-tcpl Public

    US EPA's Toxicity Forecaster (ToxCast) Pipeline. More information on the ToxCast program available here: https://www.epa.gov/comptox-tools/toxicity-forecasting-toxcast

    USEPA/CompTox-ToxCast-tcpl’s past year of commit activity
    R 36 19 42 (1 issue needs help) 3 Updated Mar 13, 2025
  • USEPA/ElectricityLCI’s past year of commit activity
    Python 28 CC0-1.0 15 104 (4 issues need help) 1 Updated Mar 13, 2025
  • BMDS Public

    U.S EPA Benchmark Dose Modeling Software (BMDS)

    USEPA/BMDS’s past year of commit activity
    C++ 1 MIT 2 0 1 Updated Mar 13, 2025
  • 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 45 CC0-1.0 21 77 (8 issues need help) 0 Updated Mar 13, 2025
  • rExpertQuery Public
    USEPA/rExpertQuery’s past year of commit activity
    R 1 CC0-1.0 2 0 0 Updated Mar 13, 2025
  • ccte-Zap-Scan Public
    USEPA/ccte-Zap-Scan’s past year of commit activity
    0 2 0 0 Updated Mar 13, 2025
  • msft-chatbot-ui Public Forked from Patrick-Davis-MSFT/chatbot-ui

    Customized GenAI chatbot interface for EPA employees

    USEPA/msft-chatbot-ui’s past year of commit activity
    TypeScript 1 MIT 8,637 3 0 Updated Mar 13, 2025
  • VELMA_Public Public

    Visualizing Ecosystem Land Management Assessments

    USEPA/VELMA_Public’s past year of commit activity
    5 2 0 0 Updated Mar 13, 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 Mar 13, 2025
  • mywaterway Public

    How's My Waterway provides information about the conditions streams, lakes and other waters anywhere in the U.S.

    USEPA/mywaterway’s past year of commit activity
    TypeScript 14 CC0-1.0 11 0 0 Updated Mar 13, 2025