DC Water is advising the public of a Sanitary Sewer Overflow (SSO) on Anacostia Ave Northeast and Ponds St at the entrance to the Kenilworth Aquatic Gardens. A 108-inch sanitary sewer line failed overnight resulting in a road closure. While initially contained, an overflow of diluted untreated wastewater began coming from the collapsed pipe today. Efforts are underway to isolate the spill, decontaminate the area, and make emergency repairs.

Wastewater periodically continues to overflow from the broken main, with approximately 6,200 gallons of sewer overflows so far. The resulting spill covered the street in a layer of dirt mixed with wastewater and opened a large sinkhole. DC Water cordoned off the area and closed the road in the 1500 block of Anacostia Ave. In coordination with the National Park Service and the District Department of Transportation, no parking restrictions are also being implemented and an entrance to the park is closed.

The sewer line, known as the Anacostia Force Main, carries combined sewage and stormwater from Maryland and the District to the Blue Plains Advanced Wastewater Treatment Facility. Work is underway to mitigate the overflow and keep it contained as much as possible.

Untreated sewage can contain many pathogens causing a variety of illnesses ranging from E. coli to hepatitis. If people come in contact with the untreated overflow, they risk getting sick and bringing these pathogens into their homes; and should take the steps below:

• Leave the area immediately.
• Wash exposed skin thoroughly with soap and clean water.
• Disinfect any affected areas or items.
• Do not consume food or water that may have been exposed.
• Seek medical attention if symptoms occur.
• Report exposure to DC Water at (202) 612-3400.

It is important to note that DC Water's drinking water system is separate from the wastewater system and is NOT affected by the overflows.

The growing sinkhole also compromised a 70-80 foot oak tree at risk of falling and was impeding the ability to access the sewer line safely. Crews have cut down the tree, and a full assessment is underway.

Emergency measures will be taken to prevent further spillage. The extent of the repairs and duration are still being determined. Additionally, DC Water is bringing in pumps to divert the wastewater to alternate sewer lines and will be installing additional containment around the pipe.

If you have additional questions or need information you may contact DC Water’s Customer Care team at (202) 354-3600 (Monday-Friday, 8 a.m. to 5 p.m.) or the 24-Hour Command Center at 202-612-3400.

*Updated 5:30PM to reflect the initial traffic advisory issued 7/20/25 at which time the wastewater was contained; and the overflow did not begin until today.