Sec. 7. (a) Except as provided in subsection (b), the:
(1) construction, acquisition, improvement, equipment, custody, administration, operation, and maintenance of any facilities for the collection and disposal of solid waste; and
(2) collection of revenues for the use and services of the facilities;
are under the supervision and control of the works board of the unit.
(b) The legislative body of a municipality may provide by ordinance that the functions described by subsection (a) are under the supervision and control of the sanitary board or utility service board of the municipality.
(c) As used in the following sections of this chapter, "board" means the works board or other board performing the functions described by subsection (a).