N.J. Stat. § 40:14B-9
No governing body of any county which may create any municipal authority pursuant to this act or which records the reorganization of any preexisting sewerage authority or county sewer authority as a municipal authority pursuant to this act, shall thereafter create any other municipal authority or a sewerage authority. No governing body (1) of any county which shall have created any sewerage authority or any county sewer authority, or (2) of a municipality constituting the whole or any part of the district of a municipal authority or of the district of a sewerage authority, or (3) of any municipality constituting the whole or any part of the sewerage district of a county sewer authority which shall have entered into a contract or contracts with such municipality, shall create or join in the creation of a municipal authority or a sewerage authority except subject to the rights (if any) of the holders of any bonds or other obligations of such other authority then outstanding and upon the written consent of such other authority and in accordance with the terms and conditions of such consent, and in the event such consent be given and a municipal authority or sewerage authority be created pursuant thereto, the terms and conditions of such consent shall thereafter be in all respects binding upon the municipal authority or sewerage authority so created and the county or municipality creating or joining in the creation of the same, and any water supply or distribution system, solid waste system, system of sewers or sewage disposal plants or hydroelectric system constructed or maintained in conformity with the terms and conditions of such consent by the municipal authority or sewerage authority so created shall be deemed not to be competitive with the utility system of the said other authority giving such consent.
N.J.S. § 40:14B-9