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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 344 196

  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 301 215

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

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

    C 259 181

  4. elevatr elevatr Public

    An R package for accessing elevation data

    R 206 28

Repositories

Showing 10 of 525 repositories
  • VELMA_Public Public

    Visualizing Ecosystem Land Management Assessments

    USEPA/VELMA_Public’s past year of commit activity
    5 2 0 0 Updated Mar 21, 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 8,675 0 1 Updated Mar 21, 2025
  • treecompareR Public
    USEPA/treecompareR’s past year of commit activity
    R 1 GPL-3.0 3 0 0 Updated Mar 21, 2025
  • EnviroAtlas_JSApp Public

    Easy to use, interactive mapping application to access hundreds of maps showing environmental data

    USEPA/EnviroAtlas_JSApp’s past year of commit activity
    JavaScript 15 9 0 1 Updated Mar 21, 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 21, 2025
  • BMDS-UI Public

    U.S. EPA Benchmark Dose Modeling Software User Interface (BMDS Desktop and BMDS Online)

    USEPA/BMDS-UI’s past year of commit activity
    CSS 3 MIT 2 0 2 Updated Mar 21, 2025
  • rExpertQuery Public
    USEPA/rExpertQuery’s past year of commit activity
    R 1 CC0-1.0 2 0 0 Updated Mar 21, 2025
  • GEPA Public

    This repository contains the code for the EPA U.S. gridded methane greenhouse gas inventory (gridded GHGI)

    USEPA/GEPA’s past year of commit activity
    Python 6 MIT 6 18 5 Updated Mar 21, 2025
  • toxvaldbmain Public

    R package of scripts used to transform data in toxval_source (processed from ToxVal_Stage package) into normalized ToxValDB format.

    USEPA/toxvaldbmain’s past year of commit activity
    R 4 2 0 5 Updated Mar 21, 2025
  • CompTox-ToxCast-tcplFit2 Public

    A Concentration-Response Modeling Utility

    USEPA/CompTox-ToxCast-tcplFit2’s past year of commit activity
    R 6 5 25 1 Updated Mar 21, 2025