Skip to content
@USEPA

U.S. Environmental Protection Agency

Protecting Human Health and the Environment

27874383918_9e9df28bd2_k

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 302 216

  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 527 repositories
  • msft-chatbot-ui Public Forked from Patrick-Davis-MSFT/chatbot-ui

    Customized GenAI chatbot interface for EPA employees

    TypeScript 1 MIT 8,708 0 0 Updated Mar 26, 2025
  • VELMA_Public Public

    Visualizing Ecosystem Land Management Assessments

    5 2 0 0 Updated Mar 26, 2025
  • ShinyVB Public

    Shiny version of Virtual Beach

    R 0 Apache-2.0 0 0 0 Updated Mar 26, 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 26, 2025
  • GEPA Public

    This repository contains the code for the EPA U.S. gridded methane greenhouse gas inventory (gridded GHGI)

    Python 6 MIT 6 1 6 Updated Mar 26, 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
  • rExpertQuery Public
    R 3 CC0-1.0 3 0 0 Updated Mar 26, 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 4 Updated Mar 26, 2025
  • FrEDI_Data Public

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

    HTML 0 MIT 2 4 0 Updated Mar 26, 2025
  • AMET Public

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

    R 23 25 1 1 Updated Mar 26, 2025