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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 359 202

  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 312 222

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

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

    C 281 189

Repositories

Showing 10 of 608 repositories
  • USEPA/egrid-dev-portal’s past year of commit activity
    JavaScript 1 MIT 0 0 0 Updated Jun 5, 2025
  • missing.data.in.ecology Public

    Repository for "Missing data in ecology: Some synthesis, clarifications, and recommendations"

    USEPA/missing.data.in.ecology’s past year of commit activity
    R 0 GPL-3.0 2 0 0 Updated Jun 5, 2025
  • flowsa Public

    Library that attributes resource use, waste, emissions, and loss to economic sectors

    USEPA/flowsa’s past year of commit activity
    Python 29 MIT 23 26 2 Updated Jun 5, 2025
  • SuRGE Public
    USEPA/SuRGE’s past year of commit activity
    HTML 0 MIT 1 8 0 Updated Jun 5, 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 Jun 5, 2025
  • csb-rebate-forms-app Public

    Code related to the U.S. EPA Clean School Bus (CSB) data collection system. Specifically, this repository provides code for the cloud.gov hosted CSB Rebate Forms Application (i.e., Applicant Dashboard).

    USEPA/csb-rebate-forms-app’s past year of commit activity
    CSS 2 CC0-1.0 2 0 1 Updated Jun 5, 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 8 Updated Jun 5, 2025
  • camd-eia-crosswalk Public

    A data crosswalk to integrate U.S. power sector emission and operation data from EPA to EIA

    USEPA/camd-eia-crosswalk’s past year of commit activity
    42 MIT 16 36 (1 issue needs help) 1 Updated Jun 5, 2025
  • egrid Public

    Emissions & Generation Resource Integrated Database (eGRID)

    USEPA/egrid’s past year of commit activity
    R 15 MIT 8 9 0 Updated Jun 5, 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 Jun 5, 2025

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