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Potomac wastewater spill appears to be largest in US history

A rupture in the Potomac interceptor caused 600,000 gallons of sewage to overflow, threatening the Chesapeake Bay and prompting expanded cleanup and monitoring efforts.

Summary by Ground News
A wastewater spill into the Potomac River that began last month now appears to be one of the largest in American history.

3 Articles

Fox5 DCFox5 DC
Center

Maryland leaders push oversight after historic Potomac spill

Leaders in Maryland are hearing from officials about ongoing efforts to clean up what’s being described as the largest sewage spill in U.S. history.

·Washington, United States
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The HillThe Hill
Center

Potomac wastewater spill appears to be largest in US history

A massive wastewater spill in the Potomac River, possibly one of the largest in American history, raises concerns for environmental health.

·Washington, United States
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The Weather NetworkThe Weather Network

Sewage spill near Washington may be largest in U.S. history

The spill has dumped nearly 1 billion litres of wastewater into the Potomac River since the middle of January

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The Hill broke the news in Washington, United States on Thursday, February 12, 2026.
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