U.S. Environmental Protection Agency

Protecting Human Health and the Environment

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United States of America
https://www.epa.gov
@EPA
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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 postingsusabjos.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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WNTRWNTRPublic
An EPANET compatible python package to simulate and analyze water distribution networks under disaster scenarios.
Python 346 197
CMAQCMAQPublic
Code for U.S. EPA’s Community Multiscale Air Quality Model (CMAQ) which helps in conducting air quality model simulations
Fortran 303 216
Stormwater-Management-ModelStormwater-Management-ModelPublic
Dynamic hydrology-hydraulic water quality simulation model for stormwater, wastewater, and combined sewer collection systems
C 263 181
elevatrelevatrPublic
An R package for accessing elevation data
R 205 28

Repositories

Showing 10 of 527 repositories

flowsa Public
Library that attributes resource use, waste, emissions, and loss to economic sectors
USEPA/flowsa’s past year of commit activity
Python 27MIT 23 24 5 UpdatedMar 27, 2025
BMDS Public
U.S EPA Benchmark Dose Modeling Software (BMDS)
USEPA/BMDS’s past year of commit activity
C++ 1MIT 2 0 1 UpdatedMar 27, 2025
FrEDI Public
FrEDI estimates annual physical and economic impacts from temperature to the U.S., through the 21st century
USEPA/FrEDI’s past year of commit activity
HTML 12 13 16 1 UpdatedMar 27, 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
HTML0MIT 2 4 0 UpdatedMar 27, 2025
msft-chatbot-ui Public Forked fromPatrick-Davis-MSFT/chatbot-ui
Customized GenAI chatbot interface for EPA employees
USEPA/msft-chatbot-ui’s past year of commit activity
TypeScript 1MIT 8,716 0 0 UpdatedMar 27, 2025
data_gathering Public
Repository for scraping GHS and experimental toxicity/physicochemical property data and storing it in a common format
USEPA/data_gathering’s past year of commit activity
Java0 2 0 0 UpdatedMar 27, 2025
test-app Public
Repository for downloadable TEST (Toxicity Estimation Software Tool) Java application
USEPA/test-app’s past year of commit activity
Java0 2 0 0 UpdatedMar 27, 2025
hibernate_qsar_model_building Public
This project manages the database underlying WebTest2.0 using Hibernate based Java code
USEPA/hibernate_qsar_model_building’s past year of commit activity
Java0 2 0 0 UpdatedMar 27, 2025
GEPA Public
This repository contains the code for the EPA U.S. gridded methane greenhouse gas inventory (gridded GHGI)
USEPA/GEPA’s past year of commit activity
Python 6MIT 6 1 6 UpdatedMar 27, 2025
egrid Public
Emissions & Generation Resource Integrated Database (eGRID)
USEPA/egrid’s past year of commit activity
R 12MIT 8 7 0 UpdatedMar 27, 2025