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Water: Tools and Technical Assistance

Vulnerability Self Assessment Tool (VSAT)

Vulnerability Self Assessment Tool (VSAT) logo


VSAT is a risk   assessment software tool for water, wastewater, and combined utilities   of all sizes. The tool assists drinking water and wastewater owners and   operators in performing security threats and natural hazards risk   assessments, as well as updating utility Emergency Response Plans. EPA,   in collaboration with Water Sector partners, has updated VSAT to be   consistent with the 2007 Risk Analysis and Management for Critical Asset   Protection framework. The upgraded tool includes a new user-interface,   an enhanced natural disaster threat assessment process, and a revised   risk assessment approach. VSAT 5.0 software will provide the following   benefits:

  • An intuitive process with   improved navigation and   enhanced work tracking features;
  • An improved analytical approach that will make   consequence, vulnerability, and likelihood of occurrence assessments of   threats more transparent; and
  • A natural disaster assessment process supported   by historical information to enable likelihood determinations.

System Requirements

To run VSAT, the following minimum system hardware and software   requirements must be met:

  • IBM PC compatible processor
  • 1 GB of RAM (2 GB recommended)
  • 250 MB of available Hard Disk Space
  • Microsoft Windows 2000, Microsoft Windows XP SP3, or Microsoft   Windows 7
  • 1024 x 768 pixels minimum screen resolution
  • Microsoft Word 2003 and Excel 2003 or later (necessary to   generate reports)
  • Microsoft Internet Explorer 6.0 or later

Note: It is highly recommended that users go to the Microsoft   website and download the most current updates for their operating system.

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