S.C. Code Ann. § 5-31-880

Any municipal corporation in this State, for the purpose of enlarging, extending or establishing a system of sewerage, may use any of the streets of such municipal corporation, and any of the public buildings, roads and highways of the county in which the municipality is located for the purpose of constructing, operating, repairing and protecting such system. But it shall restore all highways to as good a condition as they were in prior to such use without any unnecessary delay and with the least possible inconvenience to the public.