Remnants of Sewage Surface as DC Water Plans Nine‑Month Potomac Pipe Repair
A large sewer pipe collapse near I-495 and Clara Barton Parkway caused hundreds of millions of gallons of raw sewage to spill into the Potomac, leaving sewage remnants on land and in the water. DC Water says repairs will take about nine months, using bypasses to the C&O Canal and Potomac Interceptor, while state and local officials monitor water quality and public health risks across the District, Maryland, and Virginia.