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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

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  1. WNTR Public

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

    Python 345 196

  2. CMAQ Public

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

    Fortran 302 217

  3. Stormwater-Management-Model Public

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

    C 262 181

  4. elevatr Public

    An R package for accessing elevation data

    R 204 28

Repositories

Showing 10 of 525 repositories
  • CIP-service Public

    Updated version of Catchment Index Processing (CIP) Service to provide an API where outside users can index their own GIS data to NHDPlus hydrography

    PLpgSQL 4 CC0-1.0 2 0 0 Updated Mar 24, 2025
  • VELMA_Public Public

    Visualizing Ecosystem Land Management Assessments

    5 2 0 0 Updated Mar 24, 2025
  • data_gathering Public

    Repository for scraping GHS and experimental toxicity/physicochemical property data and storing it in a common format

    Java 0 2 0 0 Updated Mar 24, 2025
  • msft-chatbot-ui Public Forked from Patrick-Davis-MSFT/chatbot-ui

    Customized GenAI chatbot interface for EPA employees

    TypeScript 1 MIT 8,696 0 1 Updated Mar 24, 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 19 43 (1 issue needs help) 3 Updated Mar 24, 2025
  • CompTox-ToxCast-tcplFit2 Public

    A Concentration-Response Modeling Utility

    R 6 5 25 1 Updated Mar 24, 2025
  • AMET Public

    Code base for the U.S. EPA’s Atmospheric Model Evaluation Tool (AMET)

    R 23 25 1 1 Updated Mar 24, 2025
  • Python 0 3 0 0 Updated Mar 24, 2025
  • WNTR Public

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

    Python 345 196 34 6 Updated Mar 24, 2025
  • test-app Public

    Repository for downloadable TEST (Toxicity Estimation Software Tool) Java application

    Java 0 2 0 0 Updated Mar 24, 2025