Potomac Sewer Line Collapse Update

As of March 2, 2026

The District Department of Health (DC Health) has lifted the recreational advisory for the Potomac River in Washington, DC, effective immediately.

Ongoing water quality monitoring indicates that bacterial levels have returned to safe ranges for recreational use. The advisory was originally issued following the collapse of a section of the Potomac Interceptor sewer line. Consistent testing results now confirm that conditions have improved and the river is safe for recreation.

Residents may resume permitted recreational activities in the District’s portion of the river, including boating, kayaking, fishing, and other water-based recreation. Swimming remains legally prohibited.

Please note that this advisory applies only to waters within the District of Columbia. For areas outside the District’s boundaries, residents should follow guidance issued by neighboring jurisdictions.

Learn More:

Preventing Illnesses Associated with Sewage Exposure: ENGLISH (PDF) | SPANISH (PDF) .
Department of Energy and Environment Potomac Interceptor Update and FAQs page.
E.Coli Fact Sheet (PDF)