A sewer line broke Friday morning near Plantation Road in Lancaster, causing more than 5,000 gallons of raw sewage to flow into Bear Creek.
The spill was discovered at 8:30 a.m. Friday.
Mark Harmon, wastewater collection supervisor for the city of Lancaster, said a large tree fell on top of the sewer line, which is located in the creek. The line broke and sewage began to flow into the creek.
The S.C. Department of Heath and Environmental Control (DHEC) requires that all sewage spills of 5,000 or more gallons be reported to the local media, Harmon said.