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Potomac River Sewage Spill Repair Underway
Long-term rehabilitation of the C&O Canal expected to take 9-10 months
Published on Feb. 19, 2026
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A 72-inch diameter portion of the Potomac Interceptor, part of DC Water's sanitary sewage system, collapsed in Montgomery County, Maryland on January 19, causing millions of gallons of raw sewage to flow into the Potomac River and C&O Canal. Emergency repair of the pipe is expected to take 4-6 weeks, while a longer-term rehabilitation phase of the C&O Canal will take 9-10 months.
Why it matters
The sewage spill has caused significant environmental damage to the Potomac River and C&O Canal, impacting the local ecosystem and raising concerns about public health and safety. The repair and rehabilitation efforts are critical to restoring the waterways and preventing future incidents.
The details
To access the damaged pipe, a steel gate will be installed to isolate the affected section, and crews will pump out the remaining wastewater before starting an excavation to remove a rock dam blocking the pipe. The full extent of necessary repairs can only be assessed after the dam is removed. Once the emergency repair is complete, DC Water will begin the longer-term rehabilitation phase of the C&O Canal.
- The Potomac Interceptor pipe collapsed on January 19, 2026.
- The emergency repair of the pipe is expected to take 4-6 weeks.
- The longer-term rehabilitation of the C&O Canal is expected to take 9-10 months.
The players
DC Water
The water and sewer utility serving the District of Columbia, which owns and operates the Potomac Interceptor pipe that collapsed.
Wes Moore
The Governor of Maryland, whose state was impacted by the sewage spill.
Donald Trump
The former President of the United States, who criticized the local Democratic leaders for the disaster on his Truth Social platform.
Environmental Protection Agency (EPA)
The federal agency that has been working alongside Maryland officials to clean up and repair the damaged pipe.
What they’re saying
“The disaster was a result of "gross mismanagement of local Democrat leaders.”
— Donald Trump (Truth Social)
What’s next
A steel gate will be installed later this week to isolate the damaged section of the Potomac Interceptor pipe, allowing crews to pump out the remaining wastewater and start the excavation to remove the rock dam blocking the pipe. Once the dam is removed, the full extent of necessary repairs can be assessed.
The takeaway
The Potomac River sewage spill highlights the critical importance of maintaining and repairing aging infrastructure, as well as the need for coordinated efforts between local, state, and federal agencies to address environmental disasters. The long-term rehabilitation of the C&O Canal will be crucial for restoring the local ecosystem and preventing future incidents.
