Repair efforts continue as we reach 23 days in which no overflows have entered the Potomac River. Crews finished pressure washing the pipe upstream of the damaged section of the Potomac Interceptor and preparations are underway for the application of the geopolymer lining to reinforce and strengthen the pipe.

National Park Service Issues Special Use Permit to Move Forward with Restoration Plan

DC Water has begun the rehabilitation and environmental restoration to address areas affected by the sewer overflow from a section of the Potomac Interceptor that collapsed January 19. Contaminated material is being hauled away and work is underway to clear trees, brush, and contaminated debris in and around the collapse site as part of the environmental restoration plan approved by the National Park Service (NPS).

Potomac Interceptor Repairs Update 
March 1, 2026

• Today marks a milestone, as we reach the three-week point with no overflows entering the Potomac River. The last release to reach the river occurred on ...