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DC Water says Potomac Interceptor repairs are progressing as Army Corps bolsters site protection

Federal emergency aid supports DC Water and U.S. Army Corps in repairing the collapsed Potomac Interceptor pipe, aiming for full restoration by mid-March after 240 million gallons spilled.

  • Federal teams mobilized and are now supporting, with the United States Army Corps of Engineers setting up an emergency management operations center to support DC Water's response, and repairs progressing in Cabin John, Maryland.
  • In January, the Potomac Interceptor collapsed, sending more than 200 million gallons of wastewater into the Potomac River and forcing diversion around the damaged six-foot-wide pipe in Cabin John, Maryland.
  • Facing unstable pipe walls, crews switched to excavating a nearly 40-foot section, stabilizing it with shoring and cutting into the pipe so machinery can remove the rock dam, she said.
  • The emergency declaration lets FEMA mobilize resources and cover 75% of costs, while DC Water coordinates an Environmental Restoration Plan with the Environmental Protection Agency and National Park Service.
  • This week, DC Water will host two public meetings at 1385 Canal St., SE and Walt Whitman High School to update residents amid improved water quality but ongoing sewage odors.
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Fox5 DC broke the news in Washington, United States on Monday, February 23, 2026.
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