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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 WNTR Public

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

    Python 346 196

  2. CMAQ CMAQ Public

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

    Fortran 302 216

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

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

    C 263 181

  4. elevatr elevatr Public

    An R package for accessing elevation data

    R 204 28

Repositories

Showing 10 of 526 repositories
  • stateior Public

    Prepares US state two-region Make and Use tables

    USEPA/stateior’s past year of commit activity
    R 9 MIT 14 6 0 Updated Mar 26, 2025
  • toxvaldbBMDh Public

    This package extracts data from the ToxValDB database and calculates study-level and chemical-level BMD.

    USEPA/toxvaldbBMDh’s past year of commit activity
    R 0 2 0 0 Updated Mar 26, 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 0 MIT 10 0 0 Updated Mar 26, 2025
  • haztrak Public

    An open-source web app that illustrates how waste management software can interface with RCRAInfo to track hazardous waste electronically

    USEPA/haztrak’s past year of commit activity
    Python 49 MIT 22 0 0 Updated Mar 26, 2025
  • msft-chatbot-ui Public Forked from Patrick-Davis-MSFT/chatbot-ui

    Customized GenAI chatbot interface for EPA employees

    USEPA/msft-chatbot-ui’s past year of commit activity
    TypeScript 1 MIT 8,705 0 1 Updated Mar 25, 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

    USEPA/CompTox-ToxCast-tcpl’s past year of commit activity
    R 36 19 43 (1 issue needs help) 3 Updated Mar 25, 2025
  • FrEDI_Data Public

    Data repo for FrEDI, a tool to estimate economic impacts from temperature

    USEPA/FrEDI_Data’s past year of commit activity
    HTML 0 MIT 2 4 0 Updated Mar 25, 2025
  • BMDS Public

    U.S EPA Benchmark Dose Modeling Software (BMDS)

    USEPA/BMDS’s past year of commit activity
    C++ 1 MIT 2 0 1 Updated Mar 25, 2025
  • IntraCMS Public

    US EPA Intranet CMS

    USEPA/IntraCMS’s past year of commit activity
    CSS 6 MIT 3 0 0 Updated Mar 25, 2025
  • Air-Sensor-Network-Analysis-Tool-Public- Public

    A tool to understand air sensor performance compared to nearby air monitors and to understand local air quality.

    USEPA/Air-Sensor-Network-Analysis-Tool-Public-’s past year of commit activity
    R 1 MIT 2 0 0 Updated Mar 25, 2025