DC Water breaks ground on a 5.5-mile tunnel under D.C. to capture sewage overflows, aiming to cut Potomac River pollution by 93% by 2030.

The Potomac River Tunnel is part of a court-mandated effort to curb combined sewer overflows (CSOs), a major source of pollution in the District’s waterways. CSOs occur when heavy rain ...

This $615 million project is key to cleaning up the Potomac River. When heavy rain strikes a centuries-old neighborhood in Alexandria, Va., the city’s pipes can’t handle the volume. Storm ...

A crucial race against the clock to dig a tunnel under the Potomac River depends on a powerhouse player: a 15-foot-wide, 380-ton machine named “Hazel.” This round metal device, a custom-made ...

The Potomac River Tunnel is the next major phase of the project to mitigate the District’s combined sewer overflow system — built before 1900 — which carries both sewage and stormwater in a ...

The Tunnel Project, which started in June 2024, will create a 18-foot underground tunnel from Georgetown to the National mall to handle sewage overflow that currently pollutes the Potomac River ...

It’s all part of a major project to build a massive tunnel to keep sewer overflow from gushing into the Potomac River during heavy rain. D.C. Water issued a heads up about the traffic closures ...

WASHINGTON (7News) — West Potomac Park Drive SW, a new road constructed as part of the Potomac River Tunnel (PRT) Project, will be opening at the beginning of next week. Starting Monday ...

Alexandria's RiverRenew Tunnel Project, years in the making, aims to clean up the Potomac River and handle sewage water when it rains in the city.

Biden plans to talk about replacing the Baltimore and Potomac Tunnel. ... On Tuesday, he will travel to New York to talk about plans for another new rail tunnel, this one under the Hudson River.