N.J. Stat. Ann. § 40:63-76

No ordinance authorizing the making of a contract in writing, between municipalities for the joint construction of any of the improvement or works authorized by section 40:63-70 of this title, shall be passed by the governing body or board having power to construct sewers and drains in such municipality, until public notice shall be given in a newspaper published or circulating in the municipality, of the intention of such municipal or governing board or body to join in causing such public improvement to be made.