Washington, D.C., has lifted its recreational advisory for the Potomac River following a large-scale sewage spill earlier this year. The city's health department confirmed that E. coli levels are now within safe ranges for recreational use and that any sewage that went into the river flowed away from the water intake, not towards it. The advisory only applies to waters within the District of Columbia, and local officials are urging residents to follow guidance from neighboring jurisdictions for areas outside the district.