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@USEPA

U.S. Environmental Protection Agency

Protecting Human Health and the Environment
README.md

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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 393 210

  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 332 222

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

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

    C 303 203

Repositories

Showing 10 of 658 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 60 CC0-1.0 23 94 (7 issues need help) 6 Updated Oct 20, 2025
  • bmds-user-guide Public

    The BMDS User Guide

    USEPA/bmds-user-guide’s past year of commit activity
    0 MIT 2 0 0 Updated Oct 20, 2025
  • 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 Oct 20, 2025
  • 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 1 MIT 10 0 0 Updated Oct 20, 2025
  • Block_Check_Tool Public
    USEPA/Block_Check_Tool’s past year of commit activity
    Python 0 0 0 0 Updated Oct 20, 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 8 MIT 7 0 2 Updated Oct 19, 2025
  • campdRShinyDataSource Public
    USEPA/campdRShinyDataSource’s past year of commit activity
    R 3 MIT 2 0 0 Updated Oct 18, 2025
  • IntraCMS Public

    US EPA Intranet CMS

    USEPA/IntraCMS’s past year of commit activity
    CSS 6 MIT 3 0 0 Updated Oct 17, 2025
  • BMDS Public

    U.S EPA Benchmark Dose Modeling Software (BMDS)

    USEPA/BMDS’s past year of commit activity
    C++ 5 MIT 4 0 0 Updated Oct 17, 2025
  • SuRGE Public

    Code to reproduce the data files described in "Summertime methane and carbon dioxide emission rates and associated variables from a national-scale survey of 146 reservoirs in the United States" to be submitted to Limnology and Oceanography Letters in July 2025. The project was led by the US EPA's Office of Research and Development.

    USEPA/SuRGE’s past year of commit activity
    HTML 0 MIT 1 8 0 Updated Oct 17, 2025
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