70 ILCS 2605/4.2
There is hereby created and established a civil service board to consist of 3 persons to be selected in the manner following:
The governing authority or body of the sanitary district, hereinafter called the trustees, shall on or before January 31, 1952 appoint a civil service board of 3 members, all of whom shall be persons who are not trustees and not more than 2 of whom shall be affiliated with the same political party. Each member shall have been a qualified elector of the sanitary district for at least 5 years immediately prior to his or her appointment and shall believe firmly in the merit system of government. No person shall be appointed to the civil service board who has held an elective public office or a position in a political party within the 2 years immediately prior to his or her appointment. No member of the board shall be a member of a committee in any partisan political club or organization, or shall hold or be a candidate for any elective public office.
Of the members so appointed, one shall be appointed for a term of 2 years, one for a term of 4 years and one for a term of 6 years beginning February 1, 1952. All subsequent appointments shall be for 6 year terms beginning February 1 of the year in which the antecedent term expires. In the event a vacancy occurs from any cause in the office of any member, the unexpired portion of the term shall be filled by appointment within 60 days by the trustees. The board shall elect from its members a chairman, vice-chairman and secretary. Each shall serve for a term of 2 years or until a successor is elected. Each member of the board shall receive a salary of $15,000 per annum, except the Chairman, who shall receive a salary of $17,500 per annum. Two members of the civil service board shall constitute a quorum, but in no instance shall the board have authority or exercise responsibility if 60 days after a vacancy exists on the board it has not been filled by appointment.
No member of the civil service board shall be removed except for palpable incompetence or malfeasance in office upon written charges filed by or at the direction of the trustees and heard before the trustees sitting as the board of hearings herein provided for.
The board of hearings shall hear and determine the charges and its findings shall be final. If the charges are sustained, the member of the civil service board so charged shall be forthwith removed from office by the board of hearings and the trustees shall thereupon proceed within 30 days to fill the vacancy created by that removal. In all proceedings provided for in this Section, the board of hearings and each member thereof shall have power to administer oaths and to compel by subpoena the attendance and testimony of witnesses and the production of books and papers.
70 ILCS 2605/4.2