WHAT'S NEW
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
TRAFFIC ADVISORY: Temporary Lane Closures Rock Creek and Potomac Parkway for Sewer Rehabilitation Project
DC Water will be performing repairs to the Rock Creek Main Interceptor (RCMI) within the West End and Georgetown Neighborhoods. This will require temporary lane closures beginning tonight, February 27, at 8 PM through Monday, March 2, at 5 AM.
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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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Crews are making steady progress on the Potomac Interceptor repairs. The rock and debris dam has been cleared, but some large boulders remain in other areas of the pipe and may require additional excavation to remove. To reach and remove this remaining material, crews continue clearing soil, muck, and debris around the damaged pipe section. No overflows have entered the Potomac River in 18 days, with the last release occurring on February 8. Work also continues upstream and downstream of the failure as crews prepare the pipe for repair. Once all material is cleared, the pipe will be pressure washed and readied for geopolymer application. Geopolymer lining could begin as early as next week. Emergency repairs remain on track for completion around mid-March. Daily water quality sampling continues. 🔗 https://www.dcwater.com/about-dc-water/media/news/update-cleaning-continues-preparation-emergency-repairs-damaged-potomac
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