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    668 repositories

    • 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 lake…
      ow
      R
      •
      Creative Commons Zero v1.0 Universal
      •24•66•114•3•Updated Feb 4, 2026Feb 4, 2026

    • BMDS

      Public
      U.S EPA Benchmark Dose Modeling Software (BMDS)
      researchtoxicologyrisk-assessmentdose-response-modelingorddose-response
      C++
      •
      MIT License
      •6•7•2•1•Updated Feb 4, 2026Feb 4, 2026

    • pf_python_modelbuilding

      Public
      Python based code to create qsar models for WebTEST2.0 platform
      Python
      •2•2•0•0•Updated Feb 3, 2026Feb 3, 2026

    • TADAShinyAnalyze

      Public
      ow
      R
      •
      Creative Commons Zero v1.0 Universal
      •0•0•5•0•Updated Feb 3, 2026Feb 3, 2026

    • 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 …
      streamcat
      HTML
      •
      Creative Commons Zero v1.0 Universal
      •10•38•11•0•Updated Feb 3, 2026Feb 3, 2026

    • AMET

      Public
      Code base for the U.S. EPA’s Atmospheric Model Evaluation Tool (AMET)
      researchord
      R
      •26•26•1•1•Updated Feb 3, 2026Feb 3, 2026

    • IntraCMS

      Public
      US EPA Intranet CMS
      phpdrupaloms
      CSS
      •
      MIT License
      •3•7•0•0•Updated Feb 3, 2026Feb 3, 2026

    • bmds-user-guide

      Public
      The BMDS User Guide
      researchtoxicologyrisk-assessmentdose-response-modelingorddose-response
      MIT License
      •2•0•0•0•Updated Feb 3, 2026Feb 3, 2026

    • haztrak

      Public
      Open-source waste management software, focused on interfacing with e-Manifest to track hazardous waste electronically
      olem
      Python
      •
      MIT License
      •23•62•2•13•Updated Feb 3, 2026Feb 3, 2026

    • 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 Form…
      CSS
      •
      Creative Commons Zero v1.0 Universal
      •2•2•0•1•Updated Feb 3, 2026Feb 3, 2026

    • SW_Model

      Public
      New, organized version of water_temp_model
      R
      •0•0•0•0•Updated Feb 3, 2026Feb 3, 2026

    • egrid

      Public
      Emissions & Generation Resource Integrated Database (eGRID)
      oaregrid
      R
      •
      MIT License
      •9•25•9•0•Updated Feb 3, 2026Feb 3, 2026

    • code-json-generator

      Public
      Automation that scrapes USEPA github and provides that metadata for code.gov
      oms
      JavaScript
      •
      MIT License
      •9•2•0•0•Updated Feb 3, 2026Feb 3, 2026

    • campdRShinyDataSource

      Public
      R
      •
      MIT License
      •2•3•0•0•Updated Feb 3, 2026Feb 3, 2026

    • comptox-expocast-invitrodist

      Public
      Public repository for code, data, and publications relating to chemical distribution in vitro
      GNU General Public License v3.0
      •3•5•0•0•Updated Feb 2, 2026Feb 2, 2026

    • 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, …
      ow
      R
      •
      Creative Commons Zero v1.0 Universal
      •8•20•25•0•Updated Feb 2, 2026Feb 2, 2026

    • Sewersheds

      Public
      Repository for code related to work on modeling sewershed boundaries by ORD and OW
      HTML
      •
      MIT License
      •2•5•0•0•Updated Feb 2, 2026Feb 2, 2026

    • hawc

      Public
      Captures key data for health assessment of chemicals and other environmental hazards
      djangoresearchtoxicologyepidemiologyrisk-assessmenthuman-health-assessmentord
      Python
      •
      Other
      •4•10•0•0•Updated Feb 2, 2026Feb 2, 2026

    • emanifest-data-upload

      Public
      JavaScript
      •
      MIT License
      •0•1•0•0•Updated Feb 2, 2026Feb 2, 2026

    • gflow1

      Public
      Fortran
      •
      MIT License
      •6•3•5•0•Updated Feb 1, 2026Feb 1, 2026

    • webcms

      Public
      Content management system for EPA's flagship website, www.epa.gov
      awsterraformomsdrupal-10
      JavaScript
      •9•13•0•31•Updated Jan 30, 2026Jan 30, 2026

    • spmodel

      Public
      spmodel: Spatial Statistical Modeling and Prediction in R
      R
      •
      GNU General Public License v3.0
      •4•22•0•0•Updated Jan 30, 2026Jan 30, 2026

    • EnviroAtlas_v4

      Public
      EnvrioAtlas migration to JS4. Easy to use, interactive mapping application to access hundreds of maps showing environmental data
      researchord
      Svelte
      •
      MIT License
      •0•4•0•0•Updated Jan 30, 2026Jan 30, 2026

    • FrEDI_Data

      Public
      Data repo for FrEDI, a tool to estimate economic impacts from temperature
      fredy
      HTML
      •
      MIT License
      •4•3•10•0•Updated Jan 29, 2026Jan 29, 2026

    • 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…
      researchord
      HTML
      •
      MIT License
      •1•1•8•0•Updated Jan 29, 2026Jan 29, 2026

    • TADAShinyJoinToAU

      Public
      R
      •
      Creative Commons Zero v1.0 Universal
      •0•1•4•0•Updated Jan 29, 2026Jan 29, 2026

    • mash_dash_test

      Public
      0•0•0•0•Updated Jan 28, 2026Jan 28, 2026

    • OW_Survey_Design_Tool

      Public
      This R Shiny app presents an easy-to-use user interface for the calculation of spatially balanced survey designs of point, linear, or areal resources (i.e. lake…
      ow
      R
      •
      MIT License
      •3•8•0•0•Updated Jan 28, 2026Jan 28, 2026

    • .github

      Public
      Houses the public readme file
      1•0•0•0•Updated Jan 28, 2026Jan 28, 2026

    • AdDesignS

      Public
      Adsorption Design Software for Windows (AdDesignS)
      HTML
      •0•0•0•0•Updated Jan 28, 2026Jan 28, 2026