S.C. Code Ann. § 23-27-20

Before any such special district may be formed there shall be filed with the clerk of court of the county in which such district is proposed to be created a petition signed by a majority of the resident landowners in the proposed district. The petition shall be accompanied (a) by a plat or map showing the limits of the proposed district, (b) by an adequate description of the territory by reference to recorded plats or maps or (c) by any other general description sufficient for the commissioners of the district and the county auditor to ascertain the landowners within the area.