70 ILCS 1105/16

An action of the board requires the affirmative vote of 3 commissioners. An ordinance imposing a fine or penalty or making an appropriation shall, within 10 days after its passage, be published at least once in a newspaper designated by the board and having a general circulation within the district, and the ordinance shall not take effect until 10 days after it is published. All other ordinances, orders, or resolutions shall take effect upon their passage unless the ordinance, order, or resolution provides otherwise.