Water Distribution


394913 - Drinking Water Resilience Analysis to Support Planning and Response to Disasters

Tuesday, June 5
2:00 PM - 3:30 PM
Location: Lakeshore C
Co-Authors: Katherine Klise, Albuquerque NM – Sandia National Laboratories; Hyoungmin Woo, Cincinnati OH – Pegasus; James Mason, Cincinnati OH – ORAU; Hyoungmin Woo, Cincinnati OH – Pegasus; Regan Murray, Cincinnati OH – US Environmental Protection Agency

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 Laboratories released the Water Network Tool for Resilience (WNTR), an open source python tool. WNTR includes components to generate or modify water network structure and operations, simulate disaster scenarios, model response and repair strategies, simulate pressure dependent demand and demand-driven hydraulics, predict water quality, calculate resilience metrics and visualize results. WNTR enables prediction of important utility-specific metrics such as how long water systems will be able to continue to provide water to customers after a specific disaster, how many customers will be affected and where, and what assets are most important to fix first. Several scripts have been developed that demonstrate how to use WNTR to investigate the resilience of water distribution systems to a wide range of hazardous scenarios and to evaluate resilience‐enhancing actions, including power outage and earthquake scenarios, fire-fighting capacity and pipe criticality analysis, sampling and flushing location evaluation, and damage repair strategies. In this presentation, case studies with partner water utilities are used to demonstrate how one can use WNTR to enhance preparedness and assist with disaster response. These case studies demonstrate how water utilities can use WNTR to estimate potential damages, understand how damage to infrastructure would occur over time, evaluate preparedness strategies, prioritize response actions, and identify worse case scenarios, efficient repair strategies, and best practices for maintenance and operations.

Regan Murray

Branch Chief
U.S. Environmental Protectionn Agency

Regan Murray is a research scientist with the U. S. Environmental Protection Agency. Her research focuses on drinking water security and resilience, and has resulted in several decision support software tools available to the water sector, including TEVA-SPOT, CANARY, and WST. Dr. Murray has a PhD in Applied Mathematics from the University of Arizona where she also specialized in Hydrology and Water Resources.


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394913 - Drinking Water Resilience Analysis to Support Planning and Response to Disasters

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