A portion of Brockington Street and Main Street have been closed in the town of Timmonsville since Wednesday evening.
There's a leakage and possible sewage backup that forced the road closings, according to interim town administrator Mary Bines.
She says town crews are working around the clock to get to the bottom of the problem.
The roads are expected to be reopened as soon as the problem is fixed, Bines said.
Timmonsville has had it's fair share of sewage problems in recent years.
In February, the SC Department of Health and Environmental Control (DHEC) began closely monitoring how Timmonsville handled a problem that led to a major sewage spill.
The town's lift station on Main Street went down causing the pumps to stop.
A sewer line cave in near the lift station was believed to have caused the station to shutdown.There was a significant overflow of sewage.
The town called in crews from the City of Florence who helped to fix the problem.
Residents in Timmonsville will vote on a referendum on June 25 to allow the City of Florence to assume control of the town's combined water and wastewater system.
If Florence takes control of the system, it will have to make $12 million in repairs to the system and assume a $6 million loan the Town of Timmonsville has with United States Department of Agriculture (USDA).