The Justice Department has filed a complaint against Washington, D.C., and its water authority for a massive sewage leak into the Potomac River. The leak, from a deteriorating pipeline, spilled 244 million gallons of raw sewage. The pipeline collapsed on Jan. 19, causing sewage to flow into the river in Maryland. The complaint alleges DC Water failed to maintain the system properly. Emergency repairs have been completed, but full repairs could take months. The incident has led to political blame and a class action lawsuit. Washington and DC Water had no immediate comment.