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UPDATE: Progress on Potomac Interceptor Repair and Environmental Restoration Efforts
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 February 8. On February 28, National Park Service (NPS) issued a Special Use Permit for the repair, rehabilitation, and environmental restoration of the Potomac Interceptor and the C&O Canal National Historical Park at the area of the Potomac Interceptor collapse between Locks 10 and 14. Work continues to clean the pipe upstream and downstream from the damaged section of the Potomac Interceptor ... Read More
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UPDATE: Nearly Three Weeks Without an Overflow to Potomac River as Repair Efforts Continue on Potomac Interceptor
Potomac Interceptor Repairs UpdateFebruary 28, 2026
The bypass pumping system continues to divert wastewater around the collapse site and back into the Potomac Interceptor, preventing any overflows from reaching the Potomac River in nearly three weeks. The last time an overflow reached the river was 20 days ago, February 8. Crews continue to clean the pipe and progress is being made to remove the remaining muck, debris, and rocks inside. After cleaning, an inspection will be performed with CCTV cameras inside the pipe in preparation for the emergency repair to apply a geopolymer lining similar in ... Read More
WHAT'S NEW
UPDATE: Crews Nearing Start of Repairs for Potomac Interceptor as Cleaning Continues
No overflows reaching the Potomac River for 19 days. The last release to enter the river occurred on February 8. Crews were able to reach some of the additional large rocks downstream of the collapsed section and remove them without additional excavation. Cleaning continues in the area upstream of the damaged section of the Potomac Interceptor to remove muck, debris, and smaller rocks.
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dc.water
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It has now been three weeks with no overflows entering the Potomac River. The last release to reach the river occurred February 8. The National Park Service recently issued a Special Use Permit that allows environmental restoration work to move forward at the collapse site. Beginning today, crews will start hauling contaminated brush and soil from the area for proper disposal. Upstream cleaning is nearly complete and will be followed by pressure washing to prepare for the geopolymer lining. Cleaning continues downstream, and once complete, geopolymer work will move to that section. Emergency repairs remain on track to be completed in mid-March. Water quality sampling continues daily. đź”— https://www.dcwater.com/about-dc-water/media/news/update-progress-potomac-interceptor-repair-and-environmental-restoration
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