Upgrades planned for a critical length of DC-area sewer pipe

Aug 4, 2020

Plans are underway to design a project that will upgrade part of a massive sewer line serving portions of Northern Virginia and Maryland.

About 600 feet of D.C. Water’s Potomac Interceptor will be rehabilitated along the historic Potomac Heritage Trail.

It carries sewage from Fairfax and Loudoun counties in Virginia and from Montgomery County in Maryland — on a path ultimately ending at the Blue Plains wastewater treatment plant in Southwest D.C.

The line is 65 feet underground and ranges in size from 54 inches (4.5 feet) to 78 inches (6.5 feet).

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