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New Castle County's Clearwater Disconnection Pilot Program

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A clearwater connection permits storm water (inflow) or groundwater (infiltration) to enter the sanitary sewer system via cross connected sump pumps, french/foundation drains, punctured floor drains, leaking building drains, driveway drains, basement stairwell drains, window well drains, and roof drains. These connections, often illegal, contribute to sewage backups into basements, overflows into the environment, and increased wastewater collection and treatment costs. When properly addressed, residential clearwater flow should discharge into a nearby stream, stormwater conveyance system, or onto the property owner's yard. Often times, the general public is unaware of the existence or the illegal nature of these clearwater connections.

The objective of this paper is to share the knowledge gained from the implementation of a residential Clearwater disconnection pilot program by outlining the approach, results, and lessons learned.

Keywords: Illegal Connections; Infiltration & Inflow (I/I); Private Property Issues; Sanitary Sewers

Document Type: Research Article


Publication date: January 1, 2011

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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 These proceedings are not peer reviewed.

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