S.C. Code Ann. § 49-19-2170

If it should be deemed more expedient to the board of supervisors as to money derived from the sale of bonds issued the board may by resolution select some suitable bank or banks or other depository as temporary treasurer or treasurers to hold and disburse the moneys on the orders of the board as the work progresses until such fund is exhausted or transferred to the district treasurer by order of the board of supervisors.