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The Water Network Tool for Resilience (WNTR) is a Python package designed to simulate andanalyze resilience of water distribution networks. The software includes capability to:

• Generate water network models
• Modify network structure and operations
• Add disruptive events including pipe leaks
• Add response/repair strategies
• Simulate pressure dependent demand and demand-driven hydraulics
• Simulate water quality
• Evaluate resilience
• Visualize results

For more information, go tohttps://usepa.github.io/WNTR/

The latest release of WNTR can be installed from PyPI or Anaconda using one of the following commands in a command line or PowerShell prompt.

• PyPI

  pip install wntr

• Anaconda

  conda install -c conda-forge wntr

Seeinstallation instructions for more details.

To cite WNTR, use one of the following references:

• Klise, K.A., Hart, D.B., Bynum, M., Hogge, J., Haxton, T., Murray, R., Burkhardt, J. (2020). Water Network Tool for Resilience (WNTR) User Manual: Version 0.2.3. U.S. EPA Office of Research and Development, Washington, DC, EPA/600/R-20/185, 82p.

• Klise, K.A., Murray, R., Haxton, T. (2018). An overview of the Water Network Tool for Resilience (WNTR), In Proceedings of the 1st International WDSA/CCWI Joint Conference, Kingston, Ontario, Canada, July 23-25, 075, 8p.

• Klise, K.A., Bynum, M., Moriarty, D., Murray, R. (2017). A software framework for assessing the resilience of drinking water systems to disasters with an example earthquake case study, Environmental Modelling and Software, 95, 420-431, doi: 10.1016/j.envsoft.2017.06.022

WNTR is released under the Revised BSD license. SeeLICENSE.md for more details.

Directories

• wntr - Python package
• documentation - User manual
• examples - Examples and network files

• Katherine Klise, Sandia National Laboratories,kaklise@sandia.gov
• Terra Haxton, US Environmental Protection Agency,haxton.terra@epa.gov
• Regan Murray, US Environmental Protection Agency,murray.regan@epa.gov

The United States Environmental Protection Agency (EPA) GitHub project code is provided on an "as is"basis and the user assumes responsibility for its use. EPA has relinquished control of the information andno longer has responsibility to protect the integrity , confidentiality, or availability of the information. Anyreference to specific commercial products, processes, or services by service mark, trademark, manufacturer,or otherwise, does not constitute or imply their endorsement, recommendation or favoring by EPA. The EPAseal and logo shall not be used in any manner to imply endorsement of any commercial product or activityby EPA or the United States Government.

Sandia National Laboratories is a multimission laboratory managed and operated by National Technology andEngineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for theU.S. Department of Energy's National Nuclear Security Administration under contract DE-NA-0003525.