S.C. Code § 6-21-110
Any municipality may condemn any such works to be acquired and any land, rights, easements, franchises or other property, real or personal, deemed necessary or convenient for the construction of any such works or for extensions, improvements or additions thereto and such right shall extend to any such property in the county in which the municipality is situate and any adjoining county or counties and where the condemning municipality is a county such right shall extend to property within such county and to property in adjoining counties and in connection therewith any such municipality shall have all the rights, powers and privileges of eminent domain granted to municipalities under the laws relating thereto. If the project or work undertaken is for the establishment of a natural gas system, the municipality may exercise the power of condemnation in order to connect with the source of supply even though in so doing it shall become necessary to condemn lands, properties or rights of way in counties which do not adjoin the county in which the municipality is situated.
S.C. Code § 6-21-110