Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Water Research

Contact Us about Water Research

Submit a Comment or Question: Please use the form below the table. Make sure to include your email address if you would like a response.

Models and Tools Technical Questions: See table below for technical contacts.

Mailing Address:
U.S. EPA Research
Office of Science Information Management
109 Alexander Drive (Mail Drop: D343-04)
Durham, NC 27711

Contacts for Models, Tools, and Databases

Model,  Tool, or Database Technical Contact
3DFATMIC (Three-Dimensional Subsurface Flow, Fate and Transport of Microbes and Chemicals) Saba Tahmassebi
3DFEMWATER/3DFEMDLEWASTE (Three-Dimensional Finite Element Model of Water Flow Through Saturated-Unsaturated Media and Three-Dimensional Lagrangian-Eulerian Finite Element Model of Waste Transport Through Saturated-Unsaturated Media Models)  Center for Exposure Assessment Models 
AGWA (Automated Geospatial Watershed Assessment) Tool Yongping Yuan
AQUATOX Brenda Rashleigh
BASINS (Better Assessment Science Integrating point & Non-point Sources) BASINS Support Team 
BASS (Bioaccumulation in Aquatic Systems Simulator) Center for Exposure Assessment Models 
BIOCHLOR, Natural Attenuation Decision Support System Saba Tahmassebi
BIOPLUME III, Natural Attenuation Decision Support System Saba Tahmassebi
BIOSCREEN, Natural Attenuation Decision Support System Saba Tahmassebi
Breakpoint Chlorination Simulator for Drinking Water Systems   David Wahman
CADDIS (Causal Analysis/Diagnosis Decision Information System) EARCG-CADDIS Program 

CANARY-EDS (Continuous Analysis of Networked Array of Sensors for Event Detection)

CANARY user manual

Terra Haxton
CHEMFLO™-2000,  Software for Simulating Water and Chemical Movement in Unsaturated Soils Saba Tahmassebi
Chloramine Formation and Decay Simulator for Drinking Water Systems  David Wahman
Constant Flux Green Ampt (Infiltration Models) Saba Tahmassebi
CZAEM (Capture Zone Analytic Element Model) Saba Tahmassebi
Cyanobacteria Assessment Network Mobile Application (CyAN app and CyANWeb) CyAN Help
Drinking Water Treatability Database Page Jordan
Drinking Water Treatment Technology Unit Cost Models Thomas Speth
Ecotox (Ecotoxicology Database) ECOTOX Support
EDM (Estuary Data Mapper) EDM Support 
EFDC (Environmental Fluid Dynamics Code) Center for Exposure Assessment Models 
Environmental Technologies Design Option Tool (ETDOT) Jonathan Burkhardt
EPA Center for Exposure Assessment Modeling Center for Exposure Assessment Models 
EPA ExpoBox (A Toolbox for Exposure Assessors) Linda Phillips
EPANET (all versions) EPANET help
EPA H2O Justin Bousquin and Richard Fulford
EXAMS (Exposure Analysis Modeling System) Center for Exposure Assessment Models 
Explicit Green Ampt (Infiltration Models) Saba Tahmassebi
FOOTPRINT Saba Tahmassebi
Free Chlorine and Cyanuric Acid System Simulator David Wahman
Freshwater Explorer Contact Us Form Below
GCSOLAR Center for Exposure Assessment Models 
GeoPlatform Stormwater BMP Performance Database Mike Tryby
GIWiz (Green Infrastructure Wizard) GIWiz Support 
Global Change Explorer (GCX) Phil Morefield
Green Infrastructure Modeling Toolkit Michelle Latham
HELP (Hydrologic Evaluation of Landfill Performance) Model Max Krause
How to Identify Lead Free Certification Marks for Drinking Water System and Plumbing Products Michelle Latham
HSCTM2D (Hydrodynamic, Sediment, and Contaminant Transport Model) Center for Exposure Assessment Models 
HSSM (Hydrocarbon Spill Screening Model) Saba Tahmassebi
LakeCat (Lake-Catchment Dataset) NARS Contact 
Layered Green Ampt (Infiltration Models) Saba Tahmassebi
MINTEQA2 Center for Exposure Assessment Models 
MOFAT (Multiphase Flow and Multicomponent Transport) Saba Tahmassebi
Most Probable Number (MPN) Calculator Eric Villegas
MULTIMED (Multimedia Exposure Assessment Model) Center for Exposure Assessment Models 
NAPL (Nonaqueous Phase Liquid) Simulator Saba Tahmassebi
National Database Structure for Life Cycle Performance Assessment of Water and Wastewater Rehabilitation Technologies (Retrospective Evaluation) Ariamalar Selvakumar
OWL (Optimal Well Locator) Saba Tahmassebi
PESTAN (Pesticide Analytical) Saba Tahmassebi
Philip's Two-Term (Infiltration Models) Saba Tahmassebi
PRZM3 Center for Exposure Assessment Models 
QTRACER2 (Quantitative Tracer Analysis Software) Malcolm Field 
QUAL2K (River and Stream Water Quality)  Center for Exposure Assessment Models 
RBI (Rapid Benefit Indicators) Approach Justin Bousquin
REMChlor (Remediation Evaluation Model for Chlorinated Solvents) Saba Tahmassebi
REMFuel (Remediation Evaluation Model for Fuel Hydrocarbons) Saba Tahmassebi
SERAEM (Spreadsheet-based Ecological Risk Assessment for the Fate of Mercury) Conceptual Model Center for Exposure Assessment Models 
SHEDS (Stochastic Human Exposure and Dose Simulation) Models Chemical Safety Research 
SSOAP (Sanitary Sewer Overflow Analysis and Planning) Toolbox Mike Tryby
Stable Isotope Mixing Models for Estimating Source Proportions Renee Brooks
StreamCat (Stream-Catchment) Dataset NARS Contact 
SUSTAIN (System for Urban Stormwater Treatment and Analysis IntegratioN) Mike Tryby
SWC (National Stormwater Calculator) SWC Team 
SWMM (Storm Water Management Model) SWMM Support
TEVASPOT (Threat Ensemble Vulnerability Assessment – Sensor Placement Optimization Tool) Graphical User Interface

Terra Haxton

ToxCast (Toxicity Forecaster) Chemical Safety Research 
Traits (Freshwater Biological Traits Database) Traits Support 
Unit Emergy Value (UEV) Library UEV Library Support
VB (Virtual Beach) Mike Cyterski
VELMA (Visualizing Ecosystem Land Management Assessments) Model Bob McKane
Virulo Saba Tahmassebi
VLEACH (Vadose Zone Leaching) Model Saba Tahmassebi
VP (Visual Plumes) Center for Exposure Assessment Models 
WASP (Water Quality Analysis Simulation Program) Center for Exposure Assessment Models 
WATERSHEDSS (Water, Soil, and Hydro-Environmental Decision Support System) Center for Exposure Assessment Models 

Weight-of-Evidence Methods for Transparent and Defensible Numeric Nutrient Criteria Report

Caroline Ridley
WhAEM2000 Saba Tahmassebi
WHATIF (Watershed Health Assessment Tools Investigating Fisheries) Center for Exposure Assessment Models 
WHPA (Wellhead Protection Area) Model Saba Tahmassebi
WMOST (Watershed Management Optimization Support Tool) Naomi Detenbeck 

Submit a Comment or Question

Please enter a name to address you by.
Please enter a valid email address.
Please enter your comments.

Water Research

  • Watersheds Research
    • Watershed Assessment Research
    • Ecosystem and Community Resilience Research
    • Advanced Ambient Water Quality Research
  • Nutrients and Harmful Algal Blooms Research
    • Nutrients Research
    • Harmful Algal Blooms Research
  • Water Treatment and Infrastructure Research
    • Drinking Water Research
      • Treatment and Control of Contaminants
      • Infrastructure Resilience and Sustainability
      • Source Water Quality
      • Exposure and Health Risks
      • Models, Tools, and Analytical Methods
      • Technical Assistance in Support of BIL
      • Training, Outreach, and Technical Support
    • PFAS Research
      • PFAS Analytical Methods Research
    • Alternative Water Sources Research
    • Stormwater Management Research
    • Wastewater Research
  • Water Research Grants
  • Research Outputs
  • Training, Outreach, and Technical Support
    • Harmful Algal Blooms, Hypoxia, and Nutrients Research Webinars
    • Small Drinking Water Systems Webinars
    • Water Research Webinars
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on May 15, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.