La. Stat. tit. 33 § 3884
The police jury may repeal any ordinance creating a sewerage district, or may abolish a sewerage district in its entirety, or may change or alter its boundaries, but neither the existence nor the territorial boundaries of a sewerage district shall be affected in any manner which will impair any obligations that may have been incurred by the sewerage district during the period of its existence.
A preliminary resolution declaring the intention of the police jury to repeal or to abolish or to alter the boundaries shall be adopted, fixing a date for hearing. Notice of the hearing shall be given in the same manner as in the case of the formation of a sewerage district. A hearing shall be held before any order is entered which affects the existence or territorial limits of any sewerage district.
La. R.S. § 33:3884