Potomac Interceptor Project
DC Water’s Potomac Interceptor
What is the Potomac Interceptor?
The Potomac Interceptor (PI) sanitary sewer system carries about 60 million gallons of wastewater daily from areas near Dulles Airport to the Potomac Pumping Station in Washington, DC. Flows from the pump station are then sent to the Blue Plains Advanced Wastewater Treatment Plant for treatment before discharge into the Potomac River.
The PI was built as a result of the enactment of Public Law 86-515 (the Act), by the 86th Congress, on June 12, 1960. The Act authorized the District of Columbia to plan, construct, operate, and maintain a sanitary sewer to connect Dulles to the Washington, DC sewer system.
The PI serves Fairfax, Loudoun County, Town of Vienna, Herndon, Dulles Airport and Montgomery County, MD. DC Water is performing replacement and rehabilitation of the PI.
Potomac Interceptor Sewer Reconstruction Manhole 31 Project - Great Falls, Virginia
Potomac Interceptor Sewer Reconstruction Manhole 31 Project - Great Falls, Virginia
Did You Know?
Buildings in Disguise- There are multiple buildings serving as odor control facilities. These facilities draw odorous air from the Potomac Interceptor, pass the air through a media-filled vessel to remove the majority of odors, and discharge the treated air to the atmosphere. The facilities are part of the Potomac Interceptor's Odor Control Abatement Program.
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