DC Water is operating a bypass pump system to divert wastewater from a damaged sewer main near the Clara Barton Parkway and C&O National Historical Park. Residents in nine affected zip codes — including parts of Bethesda, Potomac, Rockville, Gaithersburg, Glen Echo, and Cabin John — are urged not to pour grease down drains or flush wipes, as these materials are clogging the bypass pumps. WSSC is passing along the alert on DC Water's behalf.
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Source: County Executive Marc Elrich, “Montgomery Update Special Edition: Snow Update 1/27/26”, received Jan 27, 2026.
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