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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 Public

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

    Python 346 197

  2. CMAQ Public

    Code for U.S. EPA’s Community Multiscale Air Quality Model (CMAQ) which helps in conducting air quality model simulations

    Fortran 306 216

  3. Stormwater-Management-Model Public

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

    C 266 182

  4. elevatr Public

    An R package for accessing elevation data

    R 205 28

Repositories

Showing 10 of 532 repositories
  • 0 0 0 0 Updated Apr 2, 2025
  • ATtILA2 Public

    Esri ArcGIS toolbox that allows users to easily calculate many common landscape metrics

    Python 10 4 0 0 Updated Apr 2, 2025
  • vdeq-stream-condition-predictions Public

    The vdeq-stream-condition-prediction repository is for making spatial stream network predictions of stream condition in the James River watershed in Virginia. The data come from Probabilistic Monitoring by Virginia Department of Environmental Quality that is used in a spatial stream network (SSN) analysis.

    HTML 0 MIT 3 5 1 Updated Apr 2, 2025
  • CompTox-thyroid-httk Public

    This repository accompanies the manuscript by Truong et al., "Interpretation of thyroid-relevant bioactivity data for comparison to in vivo exposures: A prioritization approach for putative chemical inhibitors of in vitro deiodinase activity"

    HTML 0 0 0 0 Updated Apr 2, 2025
  • treecompareR Public
    HTML 1 GPL-3.0 3 0 0 Updated Apr 2, 2025
  • JavaScript 1 MIT 0 0 0 Updated Apr 2, 2025
  • toxvaldbmain Public

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

    R 4 2 0 5 Updated Apr 2, 2025
  • CompTox-ToxCast-tcpl Public

    US EPA's Toxicity Forecaster (ToxCast) Pipeline. More information on the ToxCast program available here: https://www.epa.gov/comptox-tools/toxicity-forecasting-toxcast

    R 36 18 45 (1 issue needs help) 3 Updated Apr 2, 2025
  • egrid Public

    Emissions & Generation Resource Integrated Database (eGRID)

    R 12 MIT 8 7 0 Updated Apr 2, 2025
  • VELMA_Public Public

    Visualizing Ecosystem Land Management Assessments

    5 2 0 0 Updated Apr 2, 2025