S.C. Code Ann. § 49-19-1640

The board of supervisors shall each year thereafter determine, order and levy the amount of the annual installment of the total taxes levied under SECTION 49-19-1610, which shall become due and be collected during such year at the same time that State and county taxes are due and collected. Such annual installment and levy shall be evidenced and certified by the board not later than October 1st of each year to the county treasurer of each county in which lands and other property of the district are situated.