Today DC Water Chief Executive Officer and General Manager David L. Gadis testified before the House Energy and Commerce Committee’s Subcommittee on Oversight and Investigations regarding the Potomac Interceptor collapse to update members on our emergency response, ongoing rehabilitation efforts, and what we are doing to prevent future incidents.

Starting around May 21, 2026, drivers on K Street NW should expect a change in traffic patterns between 29th and 30th Streets NW, beneath the Whitehurst Freeway to support ongoing construction for the Potomac River Tunnel Project.

The active lane closure will shift from the north side to the south side of the roadway to support ongoing jet grouting operations. This process strengthens the ground to prepare for construction below the surface.  This new configuration is expected to remain in place through early August 2026. 

Construction at the site will continue through 2028 as part of DC Water’s ...

DC Water's Lead Free DC Program accelerated its work across all eight wards last year, replacing 43% more lead service lines in Fiscal Year 2025 than the prior year. This marks a significant achievement for the program in the newly released annual report on Lead Free DC.