Ruptured Pipe Leaking Millions of Gallons of Waste Into Potomac River Back in Operation

The massive sewage pipe that ruptured and leaked raw waste into the Potomac River has returned to operation after emergency repairs.

Mar. 14, 2026 at 6:04pm

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The 72-inch diameter sewage pipe that ruptured on January 19 and leaked 250 million gallons of untreated waste into the Potomac River over the first five days has been repaired and returned to operation, according to DC Water, the utility that runs Washington's water and sewage systems. The utility worked with the EPA and other agencies to repair the leak and monitor the ecological impact on the river, though drinking water was never in jeopardy. A class action lawsuit has been filed against DC Water over the incident.

Why it matters

The sewage spill became a serious environmental issue and the focus of political tensions between the Republican President and Democratic leaders in Maryland, Washington, and Virginia. The incident highlights the vulnerability of the region's drinking water system and the need for ecological assessments and remediation efforts to prevent future such incidents.

The details

The Potomac Interceptor ruptured on January 19, sending 250 million gallons of untreated sewage into the river just north of Washington, D.C. over the first five days. DC Water has completed testing to ensure the 72-inch diameter pipe can handle the flow, and full flow has been restored. Other work on the pipe and system could take months.

  • The pipe ruptured on January 19, 2026.
  • The spill occurred over the first five days following the rupture.
  • DC Water completed repairs and testing on March 14, 2026, allowing the pipe to return to operation.

The players

DC Water

The utility that runs Washington's water and sewage systems, responsible for repairing the ruptured pipe and monitoring the environmental impact.

Environmental Protection Agency (EPA)

Worked with DC Water to repair the leak and monitor the ecological impact on the Potomac River.

Nicholas Lailas

A Virginia resident and recreational boat user on the Potomac River, who filed a class action lawsuit against DC Water over the incident.

Muriel Bowser

The mayor of Washington, D.C., who declared an emergency and requested federal assistance to address the sewage spill.

Betsy Nicholas

The president of the Potomac Riverkeeper Network, who called for ecological assessments and remediation efforts to prevent future incidents.

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What’s next

DC Water is holding a series of public meetings in Bethesda, Maryland, and Alexandria, Virginia, to discuss updates on the repair and environmental rehabilitation efforts.

The takeaway

This incident highlights the vulnerability of the region's drinking water system and the need for proactive measures, including ecological assessments and remediation efforts, to prevent future sewage spills and protect the Potomac River.