S.C. Code Ann. § 3-7-160: Collection by county treasurer.

The governing body of the county shall file one copy of an agreement for a payment of sums in lieu of taxes with the county treasurer. On or before the date on which any payment of sums in lieu of taxes is due the county treasurer shall present a bill to the United States in the name of the county in the amount of such payment. Whenever such payment is received the county treasurer shall issue a receipt therefor, in the name of the county.