A tunnel will save us

Washington, D.C., is putting its hands on its sewage system

The century-old sewage system that serves the District of Columbia in the United States is no longer able to manage the pressure placed upon it by urban growth. It is small in scale and it quickly overflows in parts of the U.S. capital of Washington, sending stinking, untreated waters into the streets and the nearby waters of the Anacostia River.

One of the solutions is the Northeast Boundary Tunnel (NEBT), built by Webuild. It is 8.2 kilometres long and 30 metres deep. Once the entire Clean Rivers Project, of which NEBT is a part, is completed, the system will be able to reduce by 96% the amount of untreated wastewater that flows in the nearby water bodies, improving the quality of life of some five million residents.