Ala. Code § 11-99B-18

This chapter does and shall be construed to provide a complete, additional, and alternative method for the doing of the things authorized thereby and shall be regarded as supplemental and additional to other laws. However, the issuance of bonds of any district under the provisions of this chapter need not comply with the requirements of any other law of the state generally applicable to the issuance of bonds, notes, and other obligations by other public corporations organized under the laws of the state.