A sanitary sewer overflow Wednesday from a manhole east of Dulaney Valley Road at Chapelwood Lane in Baltimore County released about 15,000 gallons into the Loch Raven Watershed, public works officials said.
The overflow, which occurred between 1:45 p.m. and 7:45 p.m., was caused by roots in the sewer line and contained to a wooded area. According to public works officials, the impact was considered minimal, but the public is advised to avoid contact with waters in the area. Warning signs were being posted.

