S.C. Code § 59-109-140
Any holder of bonds issued under the provisions of this chapter and the trustee under any trust agreement, except to the extent the rights herein given may be restricted by any proceedings authorizing the issuance of or any such trust agreement securing such bonds, may, either at law or in equity, by suit, action, mandamus, or other proceedings, protect and enforce any and all rights under the laws of the State or granted hereunder or under such proceedings or trust agreement, and may enforce and compel the performance of all duties required by this chapter or by such proceedings or trust agreement to be performed by the authority or by any officer, employee, or agent thereof, including the fixing, charging, and collecting of the rates, rents, fees, charges, and other amounts herein authorized and required by the provisions of such proceedings or trust agreement to be fixed, established, and collected.
S.C. Code § 59-109-140