For the purposes of this chapter, unless otherwise indicated, the following terms shall have the meanings respectively ascribed to them by this section:

(1) AUTHORITY. The public corporation organized pursuant to the provisions of this chapter as a public corporation, agency and instrumentality of the state.

(2) AUTHORIZING RESOLUTION. A resolution or order adopted by the board of directors authorizing the issuance of bonds by the authority or providing for an indenture of trust under and pursuant to which its bonds are to be issued.

(3) BOARD OF DIRECTORS. The board of directors of the authority.

(4) BOARD. The State Board of Health of the State of Alabama or the State Committee of Public Health or the State Health Officer, whichever at the time has the authority to act in health matters pursuant to Sections 22-1-3, 22-2-1, 22-2-2, 22-2-6 and 22-2-8.

(5) BONDS. The bonds issued by the authority under the provisions of this chapter.

(6) BOND SERVICE CHARGES. With respect to an issue of bonds, an amount sufficient to pay the principal of and interest on such bonds as such principal matures and such interest comes due, the fees and expenses of paying such principal and interest or of redeeming such bonds and, if required by the authorizing resolution, payments into a principal and interest reserve fund for the better security of such bonds.

(7) FEDERAL WATER POLLUTION CONTROL ACT. The act of Congress so designated P.L. 84-660, approved July 9, 1956, as amended by P.L. 87-88, approved July 20, 1961, P.L. 89-234, approved October 2, 1965, P.L. 89-753, approved November 3, 1966, and P.L. 91-224, approved April 3, 1970, being 33 U.S.C.A., §466 et seq. and 33 U.S.C.A., §1151 et seq., as such act may be hereafter amended.

(8) LOCAL PUBLIC BODY. Such term includes each county, incorporated city or town, public board, district or other public body created by, or pursuant to, state law and having jurisdiction over the disposal of sewage, industrial wastes or other wastes. It includes also any combination of two or more of the foregoing having such jurisdiction.

(9) PROJECT. The water pollution control project of a local public body, to consist of one or more treatment works to prevent the discharge of untreated or inadequately treated sewage, industrial wastes or other wastes into any waters, for which a federal grant has been applied for by such local public body under Section 8 of the Federal Water Pollution Control Act.

(10) STATE HEALTH OFFICER. The executive officer of the State Board of Health as provided for in Section 22-2-8.

(11) STATE. The State of Alabama.

(12) TREATMENT WORKS. The various devices used in the treatment of sewage, industrial wastes or other wastes of a liquid or solid nature, including the necessary intercepting sewers, outfall sewers, pumping, power and other equipment and their appurtenances, including any extensions, improvements, remodeling, additions and alterations thereof.