Ala. Code § 9-6-17
This chapter is intended to aid the state in the execution of its duties by providing appropriate and independent instrumentalities of the state with full and adequate powers to fulfill their functions. The foregoing sections of this chapter shall be deemed to provide additional and alternative methods for the doing of the things authorized thereby and shall be regarded as supplemental and additional to and not in derogation of any powers conferred upon boards of water and sewer commissioners created by municipalities within this state or upon any other agencies of the state or the municipalities thereof which are concerned with the control, abatement or prevention of water, air or general environmental pollution. Neither this chapter nor any provision contained in this chapter shall be construed as a restriction or limitation upon any power, right or remedy which any corporation organized under this chapter may have in the absence thereof, but shall be construed as cumulative and independent of any such power, right or remedy. No proceedings, notice or approval shall be required for the incorporation of such corporation or the amendment of its certificate of incorporation, the acquisition of any property, facilities or systems, the making of any loans or the borrowing of money or assumption of obligations or the issuance of bonds or other instruments in evidence thereof or as security therefor except as prescribed in this chapter, any other law to the contrary notwithstanding; provided, however, that nothing in this chapter shall be construed to suspend the jurisdiction of the State Board of Health as may be otherwise provided by law.
Ala. Code § 9-6-17 (1975)