About 62,000 gallons of sewage spilled into a tributary of White Marsh Run on Tuesday night, Baltimore County public works officials said.
The spill near Berryfield Drive in Perry Hall was discovered by a resident at about 9 p.m. The spill was stopped at 1:30 a.m. Wednesday and repairs were finished at 9:30 a.m., officials said.
The sewage spilled into a ditch that feeds into a tributary of White Marsh Run, which in turn flows into the Bird and Gunpowder rivers.
Health officials are monitoring water quality in the tributary.
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