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    631 repositories

    • code-json-generator

      Public
      Automation that scrapes USEPA github and provides that metadata for code.gov
      oms
      JavaScript
      •
      MIT License
      •10•0•0•0•Updated Aug 24, 2025Aug 24, 2025

    • provisional_habs

      Public
      Repository holding data from Harmful Algal Bloom (HAB) monitoring conducted by United States Environmental Protection Agency, Office of Research and Development, Center for Environmental Measurement and Modelling, Atlantic Coastal Environmental Sciences Division researchers
      Creative Commons Zero v1.0 Universal
      •2•2•0•0•Updated Aug 23, 2025Aug 23, 2025

    • RAQSAPI

      Public
      A R extension to Retrieve EPA Air Quality System Data via the AQS Data Mart API
      environmental-monitoringdatamartrprogrammingrpackageaqsusepar03environmental-data-retrievalairmonitoring
      R
      •
      Other
      •7•24•4•0•Updated Aug 22, 2025Aug 22, 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.
      ow
      R
      •
      Creative Commons Zero v1.0 Universal
      •23•55•77•2•Updated Aug 22, 2025Aug 22, 2025

    • EnviroAtlas_JSApp

      Public
      Easy to use, interactive mapping application to access hundreds of maps showing environmental data
      ord
      JavaScript
      •9•17•0•0•Updated Aug 22, 2025Aug 22, 2025

    • WNTR

      Public
      An EPANET compatible python package to simulate and analyze water distribution networks under disaster scenarios.
      simulationmodelingwaterordpython
      Python
      •
      Other
      •208•376•39•9•Updated Aug 22, 2025Aug 22, 2025

    • SuRGE

      Public
      Code to reproduce the data files described in "Summertime methane and carbon dioxide emission rates and associated variables from a national-scale survey of 146 reservoirs in the United States" to be submitted to Limnology and Oceanography Letters in July 2025. The project was led by the US EPA's Office of Research and Development.
      ord
      HTML
      •
      MIT License
      •1•0•8•0•Updated Aug 22, 2025Aug 22, 2025

    • e-manifest

      Public
      API services documentation and reference material for the e-Manifest hazardous waste tracking system
      olem
      HTML
      •
      Creative Commons Zero v1.0 Universal
      •24•30•6•0•Updated Aug 22, 2025Aug 22, 2025

    • BMDS

      Public
      U.S EPA Benchmark Dose Modeling Software (BMDS)
      toxicologyrisk-assessmentdose-response-modelingorddose-response
      C++
      •
      MIT License
      •4•4•0•1•Updated Aug 22, 2025Aug 22, 2025

    • CompTox-ExpoCast-httk

      Public
      The R package "httk" provides free, open-source data and models for toxicokinetics. The models are designed to use chemical-specific in vitro (animal free) measurements. The predictions can be used for traditional dosimetry as well as in vivo-in vitro extrapolation (IVIVE). This repository is for reporting bugs and contributing enhancements.
      ordcomptox
      R
      •18•30•5•0•Updated Aug 22, 2025Aug 22, 2025

    • CompTox-ExpoCast-invivoPKfit

      Public
      ordcomptox
      HTML
      •6•8•0•0•Updated Aug 22, 2025Aug 22, 2025

    • StreamCatTools

      Public
      R package to work with the StreamCat API within R and access the full suite of StreamCat catchment and watershed scale metrics for all NHDPlusV2 stream reaches and catchments.
      streamcat
      R
      •
      Creative Commons Zero v1.0 Universal
      •10•35•16•0•Updated Aug 22, 2025Aug 22, 2025

    • EnviroAtlas_v4

      Public
      EnvrioAtlas migration to JS4. Easy to use, interactive mapping application to access hundreds of maps showing environmental data
      ord
      Jupyter Notebook
      •
      MIT License
      •0•1•0•1•Updated Aug 22, 2025Aug 22, 2025

    • webcms

      Public
      Content management system for EPA's flagship website, www.epa.gov
      awsterraformomsdrupal-10
      JavaScript
      •9•11•0•26•Updated Aug 22, 2025Aug 22, 2025

    • hwip

      Public
      Hazardous Waste Information Platform
      0•1•0•0•Updated Aug 21, 2025Aug 21, 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
      ordcctecomptox
      R
      •
      Other
      •20•38•30•2•Updated Aug 21, 2025Aug 21, 2025

    • camd-eia-crosswalk

      Public
      A data crosswalk to integrate U.S. power sector emission and operation data from EPA to EIA
      oaregrid
      MIT License
      •16•44•39•2•Updated Aug 21, 2025Aug 21, 2025

    • power-sector-dev-portal

      Public
      JavaScript
      •
      MIT License
      •1•1•1•0•Updated Aug 21, 2025Aug 21, 2025

    • CIP-service

      Public
      Updated version of Catchment Index Processing (CIP) Service to provide an API where outside users can index their own GIS data to NHDPlus hydrography
      ow
      PLpgSQL
      •
      Creative Commons Zero v1.0 Universal
      •2•5•0•0•Updated Aug 21, 2025Aug 21, 2025

    • campdRShinyDataSource

      Public
      R
      •
      MIT License
      •2•3•0•0•Updated Aug 21, 2025Aug 21, 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
      •
      MIT License
      •3•6•0•0•Updated Aug 20, 2025Aug 20, 2025

    • govchat

      Public
      Customized GenAI chatbot interface for EPA employees
      nextjsomsgenaigenai-chatbot
      TypeScript
      •
      MIT License
      •9.3k•2•0•0•Updated Aug 20, 2025Aug 20, 2025

    • egrid

      Public
      Emissions & Generation Resource Integrated Database (eGRID)
      oaregrid
      R
      •
      MIT License
      •8•19•8•1•Updated Aug 20, 2025Aug 20, 2025

    • AMET

      Public
      Code base for the U.S. EPA’s Atmospheric Model Evaluation Tool (AMET)
      ord
      R
      •27•25•1•1•Updated Aug 20, 2025Aug 20, 2025

    • BMDS-UI

      Public
      U.S. EPA Benchmark Dose Modeling Software User Interface (BMDS Desktop and BMDS Online)
      toxicologyorddose-responserisk-assesment
      CSS
      •
      MIT License
      •3•4•0•0•Updated Aug 20, 2025Aug 20, 2025

    • WATERSGeoViewer

      Public
      Source Code for the EPA WATERS GeoViewer
      ow
      Python
      •
      Creative Commons Zero v1.0 Universal
      •0•0•0•0•Updated Aug 20, 2025Aug 20, 2025

    • CMAQ_Projects

      Public
      Configuration and evaluation information on Community Multiscale Air Quality (CMAQ) model applications.
      MIT License
      •0•1•0•0•Updated Aug 20, 2025Aug 20, 2025

    • IntraCMS

      Public
      US EPA Intranet CMS
      phpdrupaloms
      CSS
      •
      MIT License
      •3•6•0•0•Updated Aug 19, 2025Aug 19, 2025

    • ShinyVB

      Public
      Shiny version of Virtual Beach
      R
      •
      Apache License 2.0
      •1•0•0•0•Updated Aug 19, 2025Aug 19, 2025

    • FrEDI

      Public
      FrEDI estimates annual physical and economic impacts from temperature to the U.S., through the 21st century
      oar
      HTML
      •
      Other
      •15•15•6•1•Updated Aug 19, 2025Aug 19, 2025