Skip to main content


Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Most people do not think of wastewater systems as significant vulnerabilities or as being prone to malevolent, intentional acts. Most people, except those working at the District of Columbia Water and Sewer Authority (DC WASA) and anyone else concerned with the security of our nation's capital.

In the world of utility security since 9/11, DC WASA, along with the Department of Homeland Security (DHS) and the United States Environmental Protection Agency (US EPA) understood that the threat posed was real and that collections systems, especially the system operated by DC WASA, expose multiple real vulnerabilities with unique, and in some cases, extreme consequences.

There are a number of reasons that alone or together make the DC WASA combined collection system unique compared to any other collection system in the nation:

This system is a large combined sewer network.

The system crosses through two states, six counties, numerous cities and the District of Columbia.

The combined collection system empties into the Blue Plains Advanced Wastewater Treatment Plant. This is the largest advanced wastewater treatment facility of its type in the United States with a rated annual average day capacity of 370 million gallons per day and a peak wet weather capacity of 1.076 billion gallons per day.

The combined collection system serves such landmarks as the Capitol, the White House, Supreme Court, Smithsonian Museums, Pentagon, Dulles and Reagan Airports.

This paper will focus on the unique issues present in the DC WASA combined collection system, including lessons learned that can be shared with other systems and a discussion of the blend of the RAM-W™ and the VSAT™ risk assessment methodologies used in this unique project. In addition, a look at the relationship between asset management and risk management from intentional acts is part of this project.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2007-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more