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Executing the Country's Largest Flow Metering Project-Evaluating the Importance of Basin Size

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The King County Wastewater Treatment Division operates the collection trunk sewers and two wastewater treatment plants in King County to collect and treat wastewater from 34 Local Agencies in King and Snohomish Counties. The total length of all Local Agency separated sewers in the King County service area is approximately 17.5 million feet. This total does not include the combined sewer system in the City of Seattle. The system experiences significant Infiltration and Inflow (I⊘I) during the wet season from October to March. King County has initiated a multi-year effort to:

Determine the wet weather performance and geographic distribution of I⊘I through its entire service area

Conduct several pilot rehabilitation projects to evaluate rehabilitation effectiveness,

Develop and calibrate an accurate hydraulic model of the system and

Prepare an implementable Regional I⊘I Control Program.

This paper discusses the political and administrative actions to achieve consensus among the Local Agencies and an analysis of I⊘I results as a function of basin size.

Document Type: Research Article


Publication date: 2001-01-01

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  • 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 These proceedings are not peer reviewed.

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