Aforesaid sections are cumulative

Miss. Code Ann. § 21-27-191, under Public Utilities and Transportation.

Miss. Code Ann. § 21-27-191

Sections 21-27-161 through 21-27-191 are cumulative of other statutes now or hereafter enacted relating to the issuance of bonds; the collection, transportation, treatment or disposal of wastes; and the design, construction, acquisition or approval of facilities for such purposes, and the municipality may exercise all presently held powers in the furtherance of said sections.