( July 7, 2026, 8:00 AM EDT) -- WASHINGTON, D.C. — A District of Columbia federal judge granted a nonprofit environmental group leave to intervene as a plaintiff in a lawsuit filed by the United States pursuant to the Clean Water Act (CWA) and the National Pollutant Discharge Elimination System (NPDES) permitting program against the public utility that owns and operates a sanitary sewer pipeline that collapsed and reportedly discharged millions of gallons of raw, untreated sewage into the Potomac River over the course of nearly two months....