S.C. Code Ann. § 50-16-25
It is unlawful to release or transport for the purpose of release a member of the family Suidae (pig) for hunting purposes or in an attempt to establish or supplement a free roaming population; however, a landowner may capture and release a pig so long as: (1) the pig is captured pursuant to a permit issued without charge by the Department of Natural Resources, and (2) the pig is released on the same tract on which the pig was captured or on an adjoining tract with permission of the owner of the adjoining tract. Under no circumstances may a pig be released in a county other than the county in which the pig was captured.