President Donald Trump offered Tuesday that the federal government could step in to help clean up the sewage spill in the Potomac River, if Democratic leaders across Maryland, Virginia, and Washington, D.C., ask him “politely.”

DC Water announced early Tuesday morning that emergency repairs to the Potomac Interceptor sewer line, which has spilled nearly 250 million gallons of wastewater into the river since Feb. 6, would not be completed until at least the end of March.