70 ILCS 2605/4.13
The following offices and places of employment, insofar as there are or may be such in the sanitary district, shall not be included within the classified civil service: All elective officers, the director of human resources, the clerk, treasurer, director of engineering, general counsel, executive director, director of maintenance and operations, director of procurement and materials management, director of monitoring and research, director of information technology, public and intergovernmental affairs officer, administrative services officer, and secretary and administrative aide to the president of the board of trustees, members of the civil service board and special examiners appointed by the civil service board and the secretaries to the officers and individual trustees, and those employed for periods not exceeding 5 years under any apprentice program, training or intern programs funded wholly or in part by grants from the State of Illinois or the United States of America. Further, apprentices in a sanitary district apprenticeship program for the trades shall not be included within the classified civil service. Entry into a sanitary district apprenticeship program for the trades shall be by lottery. Graduates of a sanitary district apprenticeship program for the trades shall be given additional points, in an amount to be determined by the Director of Human Resources, on examinations for civil service journeymen positions in the trades at the sanitary district.
70 ILCS 2605/4.13