Eight hundred thousand gallons of raw sewage poured into Gunpowder Falls Sunday night after a pumping station in the Perry Hall area unexpectedly lost power, Baltimore County reported Monday.

A Baltimore Gas and Electric Co. crew doing planned maintenance work inadvertently cut power to the sewage pumping station at the end of Dundawan Road about 11:40 p.m., according to David Fidler, spokesman for the county's Department of Public Works. Sewage overflowed from the station into the river nearby for a little more than two hours until BGE crews restored power, Fidler said in an email.

Officials urged the public to avoid contact with water in the river.