Skip to content
@USEPA

U.S. Environmental Protection Agency

Protecting Human Health and the Environment
README.md

27874383918_9e9df28bd2_k

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:

  • research -- EPA 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 441 227

  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 359 229

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

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

    C 348 228

Repositories

Showing 10 of 689 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 71 CC0-1.0 28 129 (6 issues need help) 1 Updated Jun 22, 2026
  • provisional_habs Public

    Repository holding data from Harmful Algal Bloom (HAB) monitoring conducted by United States Environmental Protection Agency, Office of Research and Development, Center for Environmental Measurement and Modelling, Atlantic Coastal Environmental Sciences Division researchers

    USEPA/provisional_habs’s past year of commit activity
    3 CC0-1.0 2 0 0 Updated Jun 21, 2026
  • TMDLDash Public

    The ExpertQueryTMDLDashboard is an R Shiny application designed to summarize and count TMDLS based on user inputs to filters on various fields including state, region, pollutant, year, and addressed parameter. TMDL data from ATTAINS are downloaded via Expert Query web services and are refreshed weekly.

    USEPA/TMDLDash’s past year of commit activity
    HTML 0 CC0-1.0 0 0 0 Updated Jun 21, 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 Jun 21, 2026
  • 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 4 MIT 4 0 0 Updated Jun 21, 2026
  • 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
    HTML 38 CC0-1.0 12 12 0 Updated Jun 20, 2026
  • BMDS Public

    U.S EPA Benchmark Dose Modeling Software (BMDS)

    USEPA/BMDS’s past year of commit activity
    C++ 9 MIT 6 2 2 Updated Jun 19, 2026
  • IntraCMS Public

    US EPA Intranet CMS

    USEPA/IntraCMS’s past year of commit activity
    CSS 7 MIT 3 0 0 Updated Jun 19, 2026
  • harmonize-wq Public

    Standardize, clean, and wrangle Water Quality Portal data into more analytic-ready formats

    USEPA/harmonize-wq’s past year of commit activity
    Python 18 MIT 10 27 7 Updated Jun 19, 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 5 MIT 0 0 1 Updated Jun 18, 2026
View all repositories

Top languages

Loading…

Most used topics

Loading…