S.C. Code § 44-7-1620
Any holder of revenue bonds issued under the provisions of this article or any of the coupons appertaining thereto, and the trustee under any trust indenture, except to the extent the rights herein given may be restricted by any resolution authorizing the issuance of, or any such trust indenture 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 resolution or trust indenture, and may enforce and compel the performance of all duties required by this article or by such resolution or trust indenture to be performed by any county board or by any officer, employee or agent.
S.C. Code § 44-7-1620