Repositories list

• 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

  ow

  R

  •

  Creative Commons Zero v1.0 Universal

  •2828 forks•7171 stars•124124 issues•22 pull requests•Updated Apr 19, 2026Apr 19, 2026

• provisional_habs

  Public
  Repository holding data from Harmful Algal Bloom (HAB) monitoring conducted by United States Environmental Protection Agency, Office of Research and Development…

  Creative Commons Zero v1.0 Universal

  •22 forks•33 stars•11 issue•00 pull requests•Updated Apr 18, 2026Apr 18, 2026

• code-json-generator

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

  oms

  oms

  JavaScript

  •

  MIT License

  •99 forks•22 stars•00 issues•00 pull requests•Updated Apr 18, 2026Apr 18, 2026

• webcms

  Public

  USEPA/webcms’s past year of commit activity
  Content management system for EPA's flagship website, www.epa.gov

  awsterraformoms+ 1

  awsterraformomsdrupal-10

  JavaScript

  •88 forks•1313 stars•00 issues•4242 pull requests•Updated Apr 17, 2026Apr 17, 2026

• surge_morpho

  Public
  Repository for working with lake morphometry and bathy datasets

  Rich Text Format

  •00 forks•00 stars•00 issues•00 pull requests•Updated Apr 17, 2026Apr 17, 2026

• AMET

  Public

  USEPA/AMET’s past year of commit activity
  Code base for the U.S. EPA’s Atmospheric Model Evaluation Tool (AMET)

  researchord

  researchord

  R

  •2626 forks•2626 stars•11 issue•22 pull requests•Updated Apr 17, 2026Apr 17, 2026

• BMDS

  Public
  U.S EPA Benchmark Dose Modeling Software (BMDS)

  researchtoxicologyrisk-assessment+ 3

  researchtoxicologyrisk-assessmentdose-response-modelingorddose-response

  C++

  •

  MIT License

  •66 forks•88 stars•22 issues•11 pull request•Updated Apr 17, 2026Apr 17, 2026

• rExpertQuery

  Public

  USEPA/rExpertQuery’s past year of commit activity
  An R package designed for retrieving ATTAINS data efficiently via Expert Query web services.

  ow

  ow

  HTML

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  Creative Commons Zero v1.0 Universal

  •55 forks•88 stars•55 issues•11 pull request•Updated Apr 17, 2026Apr 17, 2026

• ccte-api-bioactivity

  Public

  USEPA/ccte-api-bioactivity’s past year of commit activity
  US EPA's CTX Bioactivity API, available at: https://comptox.epa.gov/ctx-api/docs/bioactivity.html

  apiresearchctx+ 4

  apiresearchctxordcctecomptoxtoxcast

  Java

  •

  MIT License

  •11 fork•11 star•66 issues•11 pull request•Updated Apr 17, 2026Apr 17, 2026

• ccte-api-hazard

  Public

  USEPA/ccte-api-hazard’s past year of commit activity
  US EPA's CTX Hazard API, available at: https://comptox.epa.gov/ctx-api/docs/hazard.html

  apiresearchhazard+ 4

  apiresearchhazardctxordcctecomptox

  Java

  •

  MIT License

  •11 fork•11 star•22 issues•22 pull requests•Updated Apr 17, 2026Apr 17, 2026

• pf_python_modelbuilding

  Public
  Python based code to create qsar models for WebTEST2.0 platform

  Python

  •22 forks•22 stars•00 issues•00 pull requests•Updated Apr 16, 2026Apr 16, 2026

• emf

  Public
  Emissions Modeling Framework (EMF)

  Java

  •

  MIT License

  •55 forks•77 stars•5858 issues•00 pull requests•Updated Apr 16, 2026Apr 16, 2026

• BMDS-UI

  Public
  U.S. EPA Benchmark Dose Modeling Software User Interface (BMDS Desktop and BMDS Online)

  researchtoxicologyord+ 2

  researchtoxicologyorddose-responserisk-assesment

  CSS

  •

  MIT License

  •44 forks•44 stars•00 issues•00 pull requests•Updated Apr 16, 2026Apr 16, 2026

• ccte-api-exposure

  Public
  US EPA's CTX Exposure API, available at: https://comptox.epa.gov/ctx-api/docs/exposure.html

  apiresearchctx+ 4

  apiresearchctxordcctecomptoxexpocast

  Java

  •

  MIT License

  •11 fork•00 stars•44 issues•11 pull request•Updated Apr 16, 2026Apr 16, 2026

• ccte-api-chemical

  Public
  US EPA's CTX Chemical API, available at: https://comptox.epa.gov/ctx-api/docs/chemical.html

  apiresearchctx+ 3

  apiresearchctxordcctecomptox

  Java

  •

  MIT License

  •33 forks•55 stars•2626 issues•11 pull request•Updated Apr 16, 2026Apr 16, 2026

• ExpertQueryTMDLDashboard

  Public
  The ExpertQueryTMDLDashboard is an R Shiny application designed to summarize and count TMDLS based on user inputs to filters on various fields including state, …

  HTML

  •

  Creative Commons Zero v1.0 Universal

  •00 forks•00 stars•00 issues•00 pull requests•Updated Apr 16, 2026Apr 16, 2026

• harmonize-wq

  Public
  Standardize, clean, and wrangle Water Quality Portal data into more analytic-ready formats

  researchord

  researchord

  Python

  •

  MIT License

  •1010 forks•1818 stars•2626 issues•66 pull requests•Updated Apr 15, 2026Apr 15, 2026

• IntraCMS

  Public
  US EPA Intranet CMS

  phpdrupaloms

  phpdrupaloms

  CSS

  •

  MIT License

  •33 forks•77 stars•00 issues•00 pull requests•Updated Apr 14, 2026Apr 14, 2026

• TADAShinyAnalyze

  Public
  ow

  ow

  R

  •

  Creative Commons Zero v1.0 Universal

  •00 forks•11 star•88 issues•00 pull requests•Updated Apr 14, 2026Apr 14, 2026

• TADAShinyJoinToAU

  Public
  R

  •

  Creative Commons Zero v1.0 Universal

  •00 forks•11 star•66 issues•00 pull requests•Updated Apr 14, 2026Apr 14, 2026

• TADACommunityHub

  Public
  A collaborative hub where TADA users share and maintain information for custom workflows (e.g., state, tribal, territory, EPA, or other entities). For example, …

  R

  •

  Creative Commons Zero v1.0 Universal

  •00 forks•11 star•1212 issues•11 pull request•Updated Apr 14, 2026Apr 14, 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

  ow

  R

  •

  Creative Commons Zero v1.0 Universal

  •88 forks•2121 stars•2020 issues•00 pull requests•Updated Apr 14, 2026Apr 14, 2026

• spmodel

  Public
  spmodel: Spatial Statistical Modeling and Prediction in R

  R

  •

  GNU General Public License v3.0

  •55 forks•2323 stars•00 issues•00 pull requests•Updated Apr 13, 2026Apr 13, 2026

• WNTR

  Public
  An EPANET compatible python package to simulate and analyze water distribution networks under disaster scenarios.

  pythonresearchsimulation+ 3

  pythonresearchsimulationmodelingwaterord

  Python

  •

  Other

  •225225 forks•426426 stars•3434 issues•11 pull request•Updated Apr 13, 2026Apr 13, 2026

• 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

  ow

  PLpgSQL

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  Creative Commons Zero v1.0 Universal

  •22 forks•88 stars•00 issues•00 pull requests•Updated Apr 10, 2026Apr 10, 2026

• ICRP113_pedfluoro

  Public
  R

  •00 forks•11 star•00 issues•00 pull requests•Updated Apr 9, 2026Apr 9, 2026

• NEP-Water-Quality

  Public
  Code used for filtering, QAing, and visualizing monitoring data from NEP sites for ocean acidification and water quality analysis

  R

  •33 forks•22 stars•00 issues•00 pull requests•Updated Apr 8, 2026Apr 8, 2026

• invitrotkstats_dataproc

  Public
  Data processing scripts for manuscript datasets using the invitroTKstats R package.

  HTML

  •00 forks•00 stars•00 issues•00 pull requests•Updated Apr 8, 2026Apr 8, 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

  researchord

  HTML

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  MIT License

  •11 fork•11 star•88 issues•00 pull requests•Updated Apr 8, 2026Apr 8, 2026

• invitroTKdata

  Public
  This is an R data package containing a collection of in vitro toxicokinetic datasets (related to manuscripts) processed with the invitroTKstats R package.

  R

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  Other

  •00 forks•00 stars•00 issues•00 pull requests•Updated Apr 7, 2026Apr 7, 2026