Such sanitary board shall be composed of either the mayor of the municipality, or the city manager thereof, if said municipality shall have a city manager form of government, and two persons appointed by the governing body: Provided, That, in the event of an acquisition or merger of an existing works, the governing body may increase the membership to a maximum of four members in addition to the mayor or city manager of the municipality served by the board.
During the construction period, one of the members must be a registered professional engineer. The engineer member of the board need not be a resident of said municipality. After the construction of the plant has been completed, the engineer member may be succeeded by a person not an engineer. No officer or employee of the municipality, whether holding a paid or unpaid office, shall be eligible to appointment on said sanitary board until at least one year after the expiration of the term of his or her public office. The appointees shall originally be appointed for terms of two and three years respectively, and upon the expiration of each term and each succeeding term, an appointment of a successor shall be made in like manner for a term of three years. Vacancies shall be filled for an unexpired term in the same manner as the original appointment. Each member shall give such bond, if any, as may be required by ordinance. The mayor or city manager shall act as chairman of the sanitary board, which shall elect a vice chairman from its members and shall designate a secretary and treasurer (but the secretary and the treasurer may be one and the same), who need not be a member or members of the sanitary board. The vice chairman, secretary and treasurer shall hold office as such at the will of the sanitary board.
The members of the sanitary board shall receive compensation for their services, either as a salary or as payments for meetings attended, as the governing body may determine, and shall be entitled to payment for their reasonable expenses incurred in the performance of their duties. The governing body shall fix the reasonable compensation of the secretary and treasurer in its discretion, and shall fix the amounts of bond to be given by the treasurer. All compensation, together with the expenses in this section referred to, shall be paid solely from funds provided under the authority of this article. The sanitary board shall have power to establish bylaws, rules and regulations for its own government.