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 usajobs.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 349 200

  2. CMAQ Public

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

    Fortran 308 217

  3. Stormwater-Management-Model Public

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

    C 269 183

  4. elevatr Public

    An R package for accessing elevation data

    R 205 28

Repositories

Showing 10 of 570 repositories
  • 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 29 2 Updated Apr 16, 2025
  • toxvaldbstage Public

    R package for the processing and staging of data sources which will be loaded into the ToxVal database.

    R 1 MIT 2 0 4 Updated Apr 16, 2025
  • code-json-generator Public Forked from emartinez-usgs/code-json-generator

    Automation that scrapes USEPA github and provides that metadata for code.gov

    JavaScript 0 MIT 10 0 0 Updated Apr 16, 2025
  • flowsa Public

    Library that attributes resource use, waste, emissions, and loss to economic sectors

    Python 29 MIT 23 24 6 Updated Apr 15, 2025
  • aquametNWCA Public

    R package used to calculate vegetation metrics for National Wetlands Condition Assessment

    R 0 3 0 0 Updated Apr 15, 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 1 0 0 Updated Apr 15, 2025
  • IntraCMS Public

    US EPA Intranet CMS

    CSS 6 MIT 3 0 0 Updated Apr 15, 2025
  • SSN2 Public

    SSN2: Spatial Modeling on Stream Networks in R

    R 19 GPL-3.0 6 2 1 Updated Apr 15, 2025
  • treecompareR Public
    R 1 GPL-3.0 3 0 0 Updated Apr 15, 2025
  • GEPA Public

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

    Python 8 MIT 6 0 2 Updated Apr 15, 2025