S.C. Code Ann. § 48-3-80

Any loan agreement may provide that the pollution control facilities will be owned by the county or incorporated municipality, as the case may be, and leased to the industry; may provide the industry with an option to purchase the pollution control facility upon such terms and conditions as the governing board and the industry shall agree upon at a price which may be a nominal amount or less than the true value at the time of purchase; or may provide that the pollution control facilities shall become the property of the industry upon the acquisition thereof. Any loan agreement may also include a guaranty agreement whereby a corporation, foreign or domestic, other than the industry guarantees in whole or in part the obligations of the industry under the loan agreement upon such terms and conditions as the governing board may deem appropriate.