Creation of authority. Joining and withdrawal.

(b) Passage of such ordinance or ordinances by the legislative body or bodies shall constitute the authority a public body politic and corporate of the state, except where such authority is or becomes a departmental unit of such municipality as herein provided. (c) Any municipality may become a member of an existing authority upon such terms and conditions as the authority may determine. Any municipality which is a member of an existing authority may by vote of its legislative body elect to withdraw from such authority. Such withdrawal shall be effective only upon such terms and conditions as the authority may require and after compliance with the terms and conditions contained in any contracts between such municipality or the authority and the holders of any bonds of the authority. No such withdrawal shall relieve such municipality of any liability incurred by it as a member of the authority or as a user of any of its projects.