Ala. Code § 22-29-2
It is the intent of the Legislature by the passage of this chapter to enable the state, acting by and through the authority, to aid in the prevention and control of water pollution, to provide state financial aid or grants to local public bodies for the prevention and control of water pollution and, to these ends, to authorize the incorporation of a state authority with power to issue bonds and from the proceeds of such bonds or other funds obtained by the authority to enable the state to agree to pay and to pay such portion of the estimated reasonable cost of the projects of each local public body as may be required in order that such project shall be eligible for the maximum obtainable federal grant under the Federal Water Pollution Control Act.
Ala. Code § 22-29-2 (1975)