ALA. CODE §11-102-1. Joint exercise of powers or services authorized.
Except as otherwise provided in this chapter or as otherwise prohibited by law, any county or incorporated municipality of the State of Alabama may enter into a written contract with any one or more counties or incorporated municipalities for the joint exercise of any power or service that state or local law authorizes each of the contracting entities to exercise individually. For purposes of this chapter, it is sufficient if each of the contracting entities has the authority to exercise or perform the power or service which is the subject of the contract regardless of the manner in which the power or service shall be exercised or performed, provided that at least one of the contracting parties has the authority to exercise the power or service in the manner agreed upon by the parties. The joint contract may provide for the power or service to be exercised by one or more entities on behalf of the others or jointly by the entities.
ALA. CODE § 41-16-51
(a) Competitive bids shall not be required for utility services, the rates for which are fixed by law, regulation, or ordinance, and the competitive bidding requirements of this article shall not apply to:
(16) Subject to the limitations in this subdivision, purchases of goods made as a part of the purchasing cooperative sponsored by the National Association of Counties, its successor organization, or any other competitive bid nationwide cooperative purchasing program, or other national or regional governmental cooperative purchasing program. This subdivision shall not apply to goods for which a service or service contract, whether subject to competitive bidding under this article or not, is necessary to utilize the goods. Such purchases may only be made if all of the following occur:
a. The goods being purchased are available as a result of a competitive bid process conducted by a governmental entity and approved by the Alabama Department of Examiners of Public Accounts for each bid.
b. The goods are either not at the time available to counties on the state purchasing program or are available at a price equal to or less than that on the state purchasing program.
c. The purchase is made through a participating Alabama vendor holding an Alabama business license if such a vendor exists.
d. The entity purchasing goods under this subdivision has been notified by the Department of Examiners of Public Accounts that the competitive bid process utilized by the cooperative program offering the goods complies with this subdivision.