S.C. Code Ann. § 4-13-100: Drawing of orders on county treasurer.

The county supervisor shall draw orders on the county treasurer, under the seal of the supervisor, countersigned by the secretary or clerk of the governing body of the county for all accounts against the county which the governing body has allowed, but he shall draw no orders until after the monthly report of the treasurer has been received by the governing body, nor unless he has reported that there are funds in the treasury to pay the same. The county supervisor shall inform the county treasurer of the orders drawn, in whose favor, the amount and the order in which they are drawn.