DC Water is being honored with a national award from the Design-Build Institute of America (DBIA). The award recognizes DC Water for its rehabilitation of a critical section of the Potomac Interceptor, a major sewer line that serves the region.

The project was named a 2026 National Design-Build Merit Award winner in the Water/Wastewater category. It was also one of four projects in that category considered for DBIA’s National Design-Build Project Excellence Award. Officially called the Rehabilitation of Potomac Interceptor Manhole 31, the work involved a section of the sewer line in Great Falls ...

On Thursday, November 5, beginning at 9 p.m., DC Water will be doing valve repair work involving lane closures and potential delays along M Street NW in Georgetown. Crews will replace one large valve and two small valves, continuing repairs that began Monday but were not completed because of unforeseen issues. The scheduled work and lane closures are expected to last eight hours, through 5 a.m. Friday, November 6.

Expect westbound lane closures and delays on M Street NW between 33rd and 36th streets during the overnight work.

WHEN AND WHAT TO EXPECT:

Date: Thursday night, November 5, through ...

Drivers should expect periodic traffic delays midday and overnight on Clara Barton Parkway at the Maryland-DC border through December 23, 2026, as DC Water works to complete emergency repairs on the Potomac Interceptor sewer system.

During scheduled work periods 10 a.m. – 2 p.m. and 8 p.m. – 4 a.m., one lane may be closed to allow crews to safely deliver pipe, prepare for upcoming work, and complete sliplining work to repair this section of the Potomac Interceptor. Upcoming traffic impacts are scheduled for, but not limited to, the following dates: November 4 – 6 and November 8 – 20, with ...