Ala. Code § 39-7-29
The authority shall not include in an enterprise in which it is engaged the furnishing of any services not named in the petition provided for by this chapter unless the furnishing of such additional services shall be submitted to and approved by the electors of the territory of such authority. If the board of trustees of such authority shall by resolution determine to submit the question of furnishing such additional services or if a petition requesting the submission of such a question in the general form and executed as provided for petitions for the submission to vote on the question of incorporating an authority under this chapter shall be filed with the secretary of the board of trustees of the authority, such question shall be submitted for the approval of such electors at a special election in the territory to be held not less than 60 days after the adoption of such resolution or the filing of such petition or at the next general election in the municipality if the same is held not less than 60 days after such adoption or filing.
The mode or method of procedure for the submission of such question, the publication of notice therefor, the conduct thereof, the canvassing of votes thereat and the proclamation of result shall conform as nearly as may be reasonable with the mode or method of procedure for the submission of the question of the incorporation of such authority at an election as provided in this chapter, except that the board of trustees of each authority shall act in the place and stead of the governing body and the secretary of the board of trustees shall act in the place and stead of the clerk of the municipality. If the number of votes cast in favor of the furnishing of such additional services exceeds the number of votes cast against the furnishing of such additional services at such election, the authority shall within a reasonable time furnish such additional services.
The provisions of this chapter relative to the jurisdiction of the authority and the transfer of property, powers and duties to the authority after the incorporation thereof shall apply to the enlargement of the services thereof in like manner and to the same extent as such provisions apply to the services furnished by the authority by virtue of the petition for incorporation.
Ala. Code § 39-7-29 (1975)