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AN OVERVIEW OF THE WATER NETWORK TOOL FOR RESILIENCE (WNTR) - Canada (PAPER IN NON-EPA PROCEEDINGS)
WNTR integrates hydraulic and water quality simulation, a wide range of damage and response options, and resilience metrics into a single software framework, allowing for end-to-end evaluation of water network resilience. WNTR includes capabilities to 1) generate and modify water...
Results from the EWRI Summit on the Future of EPANET (PAPER IN NON-EPA PROCEEDINGS)
The Environmental and Water Resources Institute (EWRI) in association with the National Center for Infrastructure Modeling and Management (NCIMM), EPA, and the broad user and open-source software development communities convened an EPANET Visioning Summit in Reston Virginia on Ap...
Modeling of Dispersion Effect for Intermittent Flow in Home Plumbing Systems (PRESENTATION)
Modeling tools for water distribution systems have been developed and used for many years, however, only limited attention has been given to home or premise plumbing modeling. Recent issues in Flint, MI highlighted the need for modeling premise plumbing systems (PPSs) and their u...
An Overview of the Water Network Tool for Resilience (WNTR) (PRESENTATION)
The Water Network Tool for Resilience (WNTR) is a new software package that integrates hydraulic and water quality simulation, a wide range of damage and response models, and resilience metrics into a single software framework, allowing for end-to-end evaluation of drinking water...
Resilience Analysis Using the Water Network Tool for Resilience (PRESENTATION)
Recent hurricanes and earthquakes have highlighted the essential role of drinking water infrastructure in our everyday life as well as the vulnerability of this critical infrastructure to disasters. In 2017, the U. S. Environmental Protection Agency and Sandia National Laborator...
Open Source EPANET: Community-Based Software Development for Drinking Water Infrastructure Modeling - Minneapolis (PRESENTATION)
To better support EPANET stakeholders and the needs of the water community, EPA has initiated an open source software (OSS) project to advance and maintain EPANET.
Modeling Drinking Water Lead Exposure from Premise Plumbing (PRESENTATION)
Exposure to drinking water contaminants, specifically lead, remains an important health concern. Modeling lead release within home plumbing systems includes quantifying the dissolution of lead into the water from all lead sources, and the transport of that lead through the pipes/...
Threat Ensemble Vulnerability Assessment – Sensor Placement Optimization Tool (TEVA-SPOT) Graphical User Interface User’s Manual (PUBLISHED REPORT)
This report provides an updated User’s Manual for the Threat Ensemble Vulnerability Assessment – Sensor Placement Optimization Tool (TEVA-SPOT), graphical user interface (GUI) software program. The TEVA-SPOT software tool quantifies consequences from an array of contaminant-rele...
Let's Get Moving and Write Software: an Open Source Project for EPANET (JOURNAL)
Water infrastructure simulation models, such as EPANET and SWMM, have played a significant role in simulating water distribution, stormwater and sanitary sewer systems. These software packages have played an important, and varying, role to different portions of the water infrast...
Mass Imbalances in EPANET Water-quality Simulations (JOURNAL)
This journal article examines EPANET, which is widely employed to simulate water quality in water distribution systems. However, the time-driven simulation approach used to determine concentrations of water-quality constituents provides accurate results, in general, only for smal...
EPA’s Water Security Modeling and Simulation Research (SUMMARY)
A software framework for assessing the resilience of drinking water systems to disasters with an example earthquake case study (JOURNAL)
Water Security Toolkit User Manual: Version 1.3 (DATA)
User manual: Data Product/Software
Modeling Fate and Transport of Arsenic in a Chlorinated Distribution System (JOURNAL)
Better Water Demand and Pipe Description Improve the Distribution Network Modeling Results (PAPER IN NON-EPA PROCEEDINGS)
Distribution system modeling simplifies pipe network in skeletonization and simulates the flow and water quality by using generalized water demand patterns. While widely used, the approach has not been examined fully on how it impacts the modeling fidelity. This study intends to ...
Water Network Tool for Resilience (WNTR) User Manual (PUBLISHED REPORT)
The Water Network Tool for Resilience (WNTR) is a new Python package designed to simulate and analyze resilience of water distribution networks to a variety of disaster scenarios. WNTR can help water utilities to explore the capacity of their systems to handle disasters and gui...
What is EPA Planning for EPANET? (PRESENTATION)
Presentation at the ASCE Visioning Summit, April 3-4, 2018
APPLICATION OF EPANET TO UNDERSTAND LEAD RELEASE IN PREMISE PLUMBING (PRESENTATION)
This presentation describes the factors affecting lead concentration in tap water using an EPANET hydraulic model for a simplified home model, a realistic home model, and EPA's experimental home plumbing system.
Mixing at double-Tee junctions with unequal pipe sizes in water distribution systems (JOURNAL)
Pipe flow mixing with various solute concentrations and flow rates at pipe junctions is investigated. The degree of mixing affects the spread of contaminants in a water distribution system. Many studies have been conducted on the mixing at the cross junctions. Yet a few have focu...
Using WNTR to Model Water Distribution System Resilience (PRESENTATION)
The Water Network Tool for Resilience (WNTR) is a new open source Python package developed by the U.S. Environmental Protection Agency and Sandia National Laboratories to model and evaluate resilience of water distribution systems. WNTR can be used to simulate a wide range of di...
Using SCADA Data, Field Studies, and Real-Time Modeling to Calibrate Flint's Hydraulic Model (PRESENTATION)
EPA has been providing technical assistance to the City of Flint and the State of Michigan in response to the drinking water lead contamination incident. Responders quickly recognized the need for a water distribution system hydraulic model to provide insight on flow patterns an...
Water Quality Modeling in the Dead End Sections of Drinking Water Distribution Networks -journal article (JOURNAL)
Dead-end sections of drinking water distribution networks are known to be problematic zones in terms of water quality degradation. Extended residence time due to water stagnation leads to rapid reduction of disinfectant residuals allowing the regrowth of microbial pathogens. Wate...
RTX:LINK – AN EPANET-RTX APPLICATION FOR WATER UTILITIES TO IMPLEMENT REAL-TIME ANALYTICS (SUMMARY)
Enhancements to the EPANET-RTX (Real-Time Analytics) Software Libraries-2015 (SUMMARY)
Technical brief and software
Optimal Monitoring Location Selection for Water Quality Issues (PAPER IN NON-EPA PROCEEDINGS)