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Water Network Tool for Resilience (WNTR) Overview, Requirements, and Tutorials
Citation:
Klise, K., T. Haxton, C. Karrenberg, D. Hart, K. Bonney, AND J. Hogge. Water Network Tool for Resilience (WNTR) Overview, Requirements, and Tutorials. U.S. Environmental Protection Agency, Washington, DC, EPA/600/S-25/183, 2025.
Impact/Purpose:
Drinking water systems face multiple challenges, including aging infrastructure, water quality concerns, uncertainty in supply and demand, natural disasters, environmental emergencies, and terrorist attacks. All of these have the potential to disrupt a large portion of a water system causing damage to infrastructure and outages to customers. Increasing resilience to these types of hazards is essential to improving water security. The Water Network Tool for Resilience (WNTR) is a Python package allowing for end-to-end evaluation of drinking water infrastructure resilience to disasters. The software improves upon EPANET's capabilities by fully integrating hydraulic and water quality simulation, damage estimates and response actions, and resilience metrics into a single platform. This summary report provides single page "fact sheets" that provide an overview of WNTR, the data requirements for a WNTR analysis, and tutorials for using WNTR. The updated tutorials include how to get started with WNTR, how to use the basic functionalities of WNTR, how to develop a water distribution network model using WNTR, how to simulate the affects of a landslide on a distribution network in WNTR, and how to use the multi-species water quality functionalities and libraries in WNTR. This tool is important for drinking water systems around the world who want to better understand how their water systems can withstand natural disasters like earthquakes, floods, and power outages.
Description:
This document includes an overview summary of the Water Network Tool for Resilience (WNTR), a listing of the data requirements to use WNTR, and a list of WNTR tutorials available. It also includes Jupyter Notebooks for these tutorials. These resources can help drinking water utilities build capacity and resilience. The tutorials demonstrate the basic functionality of WNTR, a WNTR landslide disaster scenario analysis, steps to create a drinking water distribution system model using geospatial data in WNTR, and multi-species constituent water quality analysis in WNTR. These tutorials provide examples of how systems might respond to disasters. Drinking water utilities of all sizes can use these resources to get a deeper understanding of drinking water distribution system dynamics. .