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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 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

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  1. WNTR WNTR Public

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

    Python 354 201

  2. CMAQ CMAQ Public

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

    Fortran 311 221

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

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

    C 276 186

Repositories

Showing 10 of 597 repositories
  • FrEDI Public

    FrEDI estimates annual physical and economic impacts from temperature to the U.S., through the 21st century

    USEPA/FrEDI’s past year of commit activity
    HTML 14 14 16 1 Updated May 16, 2025
  • egrid Public

    Emissions & Generation Resource Integrated Database (eGRID)

    USEPA/egrid’s past year of commit activity
    R 14 MIT 8 8 0 Updated May 16, 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 52 CC0-1.0 23 74 (8 issues need help) 2 Updated May 16, 2025
  • USEPA/ElectricityLCI’s past year of commit activity
    Python 29 CC0-1.0 15 113 (4 issues need help) 0 Updated May 16, 2025
  • ShinyVB Public

    Shiny version of Virtual Beach

    USEPA/ShinyVB’s past year of commit activity
    R 0 Apache-2.0 1 0 0 Updated May 16, 2025
  • AVERT Public

    Tool which evaluates how energy policies and programs such as energy efficiency and renewable energy lead to changes in emissions from electric power plants

    USEPA/AVERT’s past year of commit activity
    TypeScript 9 CC0-1.0 4 0 3 Updated May 16, 2025
  • EnviroAtlas_DB Public

    Repo for storing Enviroatlas DB

    USEPA/EnviroAtlas_DB’s past year of commit activity
    JavaScript 0 0 0 1 Updated May 16, 2025
  • toxvaldbstage Public

    R package for the processing and staging of data sources which will be loaded into the ToxVal database.

    USEPA/toxvaldbstage’s past year of commit activity
    R 1 MIT 2 0 6 Updated May 16, 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 MIT 2 0 7 Updated May 16, 2025
  • SuRGE Public
    USEPA/SuRGE’s past year of commit activity
    HTML 0 MIT 1 11 0 Updated May 16, 2025

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