DC Water isolates leak in 3rd Street Tunnel, transitions to repair

August 24, 2021
3rd Street Tunnel

Water service restored to all customers on Monday;
DC Water partnering with District agencies on unified response

DC Water continues to address the water main break in the 3rd Street Tunnel. The break is on an 8-inch main that runs through the tunnel, though the exact location of the break is still being determined.

DC Water will provide an update on the time to repair once the location and repair needs are determined. The system pressure remains stable, and we do not anticipate any additional outages related to this incident. The tunnel closure is confined to the area of the break. Commuters can travel northbound as far as Massachusetts Ave, NW and southbound from Massachusetts Ave, NW.

DC Water CEO and General Manager David L. Gadis, commented, “The good news is that we were able to restore water service to all customers yesterday. All but one building were back in service by late afternoon and the remaining building, 307 K Street, NW, had water service in the evening. Still, DC Water mobilized bottled water distribution to 307 K Street NW and delivered nearly 650 cases of water to the building.”

Gadis added, “I would like to thank all the staff and agencies involved in this event. The District agencies and the Executive Office of the Mayor quickly coordinated and have provided a joint response. This is arduous work, around the clock, in extreme heat—all the responders have my gratitude.”

As there are many causes of water main breaks and leaks, DC Water will have a better understanding of the cause of the infrastructure failure in this case once the water main is exposed. A specific cause is not always determined.

Elsewhere in the District yesterday were reports of low water pressure in Northwest; however, those were related to hydrant flushing— the practice of opening fire hydrants to pull fresh water through the system— and were unrelated to this incident. That work was completed yesterday afternoon and DC Water confirmed that water pressure was restored to those customers.

 

Latest News

Placeholder DC Water Image

DC Water is advising motorists of a road closure in the 1500 block of Anacostia Avenue Northeast, at the intersection with Ponds Street due to a sewer main repair. The location is adjacent to ...

Map of construction site
Construction Activity Notification - DC Clean Rivers - Potomac River Tunnel Project

DC Water is beginning critical ground stabilization work this week for the Potomac River Tunnel Project. The work ...

DC Water worker next to hydrant and list of bond ratings by agency

The District of Columbia Water and Sewer Authority (DC Water) has once again earned top credit ratings from all three major agencies—S&P Global Ratings, Moody’s Investors Service, and Fitch Ratings ...

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Map of construction site
Major Ground Stabilization Work Begins Near Capital Crescent Trail
Construction Activity Notification - DC Clean Rivers - Potomac River Tunnel Project
Latest Blog Post
A helicopter lowers a drill rig to workers on the Potomac River.
DC Water begins drilling in Potomac River to explore options to rehab underwater sewer line
When one of your major sewer lines runs through the Potomac River, a backhoe and trencher won't do. That's why we've got helicopters carrying a 14-ton drill and workers suspended midair over the Potomac.
Upcoming Meeting
Date
September 2, 2025
Tuesday, 10:00 AM

Upcoming Events