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    660 repositories

    • ccte-api-chemical

      Public
      Code for chemical microservice used in CCTE APIs
      ordccte
      Java
      •
      MIT License
      •2•3•26•1•Updated Nov 13, 2025Nov 13, 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•37•11•0•Updated Nov 13, 2025Nov 13, 2025

    • code-json-generator

      Public
      Automation that scrapes USEPA github and provides that metadata for code.gov
      oms
      JavaScript
      •
      MIT License
      •10•1•0•0•Updated Nov 13, 2025Nov 13, 2025

    • campdRShinyDataSource

      Public
      R
      •
      MIT License
      •2•3•0•0•Updated Nov 13, 2025Nov 13, 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•60•93•6•Updated Nov 13, 2025Nov 13, 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 Nov 12, 2025Nov 12, 2025

    • csb-rebate-forms-app

      Public
      Code related to the U.S. EPA Clean School Bus (CSB) data collection system. Specifically, this repository provides code for the cloud.gov hosted CSB Rebate Forms Application (i.e., Applicant Dashboard).
      CSS
      •
      Creative Commons Zero v1.0 Universal
      •2•2•0•1•Updated Nov 12, 2025Nov 12, 2025

    • EnviroAtlas_v4

      Public
      EnvrioAtlas migration to JS4. Easy to use, interactive mapping application to access hundreds of maps showing environmental data
      ord
      Svelte
      •
      MIT License
      •0•1•0•0•Updated Nov 12, 2025Nov 12, 2025

    • ccte-api-hazard

      Public
      Java
      •
      MIT License
      •1•1•4•0•Updated Nov 12, 2025Nov 12, 2025

    • EnviroAtlas_DB

      Public
      Repo for storing Enviroatlas DB
      JavaScript
      •0•0•0•1•Updated Nov 12, 2025Nov 12, 2025

    • WNTR

      Public
      An EPANET compatible python package to simulate and analyze water distribution networks under disaster scenarios.
      pythonsimulationmodelingwaterord
      Python
      •
      Other
      •210•400•36•0•Updated Nov 12, 2025Nov 12, 2025

    • IntraCMS

      Public
      US EPA Intranet CMS
      phpdrupaloms
      CSS
      •
      MIT License
      •3•6•0•0•Updated Nov 12, 2025Nov 12, 2025

    • webcms

      Public
      Content management system for EPA's flagship website, www.epa.gov
      awsterraformomsdrupal-10
      JavaScript
      •9•12•0•27•Updated Nov 12, 2025Nov 12, 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•3•0•0•Updated Nov 12, 2025Nov 12, 2025

    • BMDS

      Public
      U.S EPA Benchmark Dose Modeling Software (BMDS)
      toxicologyrisk-assessmentdose-response-modelingorddose-response
      C++
      •
      MIT License
      •5•6•2•1•Updated Nov 12, 2025Nov 12, 2025

    • flowsa

      Public
      Library that attributes resource use, waste, emissions, and loss to economic sectors
      ord
      Python
      •
      MIT License
      •24•34•26•0•Updated Nov 10, 2025Nov 10, 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•3•0•Updated Nov 10, 2025Nov 10, 2025

    • ELG-Search-Tools

      Public
      ELG Search Tools
      ow
      HTML
      •
      Creative Commons Zero v1.0 Universal
      •0•0•0•0•Updated Nov 7, 2025Nov 7, 2025

    • EPA_OMEGA_Model

      Public
      Model to evaluate policies for reducing greenhouse gas emissions from light duty vehicles
      oar
      Python
      •8•19•3•1•Updated Nov 7, 2025Nov 7, 2025

    • emanifest-workflow

      Public
      Vue
      •0•1•0•0•Updated Nov 7, 2025Nov 7, 2025

    • WMLCI

      Public
      Waste Management Life Cycle Inventory Model Assembler and Calculator
      Python
      •
      MIT License
      •1•2•0•0•Updated Nov 6, 2025Nov 6, 2025

    • TADAShiny

      Public
      TADAShiny is a R Shiny application (link to web version below) built on top of the TADA R Package (https://github.com/USEPA/TADA). It provides a user friendly, web accessible interface.
      ow
      R
      •
      Creative Commons Zero v1.0 Universal
      •8•18•35•0•Updated Nov 6, 2025Nov 6, 2025

    • R4-WQ-Modeling-Tools

      Public
      Watershed Modeling Tools developed and supported by EPA Region 4
      Visual Basic .NET
      •
      MIT License
      •0•0•0•0•Updated Nov 5, 2025Nov 5, 2025

    • haztrak

      Public
      Open-source waste management software, focused on interfacing with e-Manifest to track hazardous waste electronically
      olem
      Python
      •
      MIT License
      •23•60•2•7•Updated Nov 5, 2025Nov 5, 2025

    • harmonize-wq

      Public
      Standardize, clean, and wrangle Water Quality Portal data into more analytic-ready formats
      ord
      Python
      •
      MIT License
      •9•18•23•6•Updated Nov 5, 2025Nov 5, 2025

    • Organon

      Public
      Repository for the Organon collaborative framework for resilience planning
      HTML
      •0•1•0•0•Updated Nov 2, 2025Nov 2, 2025

    • the-manifest-game

      Public
      Interactive decision tree to guide e-Manifest users
      olem
      TypeScript
      •
      MIT License
      •3•0•0•6•Updated Nov 1, 2025Nov 1, 2025

    • gflow1

      Public
      Fortran
      •
      MIT License
      •5•3•5•0•Updated Nov 1, 2025Nov 1, 2025

    • AMET

      Public
      Code base for the U.S. EPA’s Atmospheric Model Evaluation Tool (AMET)
      ord
      R
      •27•25•1•1•Updated Oct 30, 2025Oct 30, 2025

    • FTT-R

      Public
      HTML
      •0•1•7•0•Updated Oct 30, 2025Oct 30, 2025