Each county which is now levying or may hereafter levy a special sanitary tax shall have the power from time to time to sell and issue, in addition to all other securities which it may now or hereafter be authorized to issue, interest-bearing warrants or certificates of indebtedness of such county for the purpose of paying the costs of acquiring, providing, constructing, enlarging or extending a sanitary sewer system or systems or any part or parts thereof, including sanitary sewers, outfall lines, a sewage disposal plant or plants and appurtenances to any thereof; provided, that the maximum principal amount of warrants and certificates of indebtedness that may be issued under the provisions of this article shall not exceed $1,500,000.00.
Any such warrants or certificates of indebtedness may be in such denomination or denominations, may have such maturity or maturities not exceeding 20 years from their date, may bear interest at such rate or rates not exceeding six percent per annum payable semiannually, may be payable at such place or places whether within or without this state, may be executed in such manner and may contain such terms not in conflict with the provisions of this article, all as the county commission of the county may provide in the proceedings wherein the warrants or certificates of indebtedness are authorized to be issued.
All such warrants and certificates of indebtedness shall be sold only at public sale at such time or times and in such manner and after such notice as the county commission of the county may direct. All such warrants and certificates of indebtedness shall evidence general obligation debts of the county by which they are issued and the full faith and credit of the county shall be irrevocably pledged for the payment of the principal thereof and interest thereon. The proceeds derived from the sale of any such warrants or certificates of indebtedness shall be used solely for the purposes for which they are authorized to be issued, including the payment of any expenses incurred in connection with the issuance thereof.