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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 346 196

  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 263 181

  4. elevatr Public

    An R package for accessing elevation data

    R 204 28

Repositories

Showing 10 of 526 repositories
  • haztrak Public

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

    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

    TypeScript 1 MIT 8,700 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

    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

    HTML 0 MIT 2 4 0 Updated Mar 25, 2025
  • BMDS Public

    U.S EPA Benchmark Dose Modeling Software (BMDS)

    C++ 1 MIT 2 0 1 Updated Mar 25, 2025
  • IntraCMS Public

    US EPA Intranet CMS

    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.

    R 1 MIT 2 0 0 Updated Mar 26, 2025
  • 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.

    R 47 CC0-1.0 21 71 (8 issues need help) 1 Updated Mar 25, 2025
  • FrEDI Public

    FrEDI estimates annual physical and economic impacts from temperature to the U.S., through the 21st century

    HTML 12 13 16 1 Updated Mar 25, 2025
  • egrid Public

    Emissions & Generation Resource Integrated Database (eGRID)

    R 12 MIT 8 7 0 Updated Mar 25, 2025