70 ILCS 2605/27
If any channel is constructed under Section 23 of this Act, the trustees of such district shall, when such channel is completed, and before any water or sewage is admitted therein, duly notify, in writing, the Governor of this State of such fact. The Governor shall, upon receipt of notice, appoint 3 discreet persons as commissioners, one of whom shall be a resident of the City of Joliet or between said city and the City of LaSalle, one a resident of the City of LaSalle or between said city and the City of Peoria, and one a resident of the City of Peoria or between said city and the mouth of the Illinois River, to inspect the work. The commissioners shall, within 10 days after such appointment, meet at the City of Chicago, appoint a competent civil engineer and employ other assistance as they consider necessary to perform their duties. The commissioners shall take as their datum line for the survey the datum established by the Illinois and Michigan Canal Trustees in 1847, and shall make such examination and surveys of Chicago River and of the channel or channels authorized by this Act to determine whether the channel is of the character and capacity required by this Act. On finding that the work complies with Section 23 of this Act, the commissioners shall so certify to the Governor, who shall thereupon authorize the water and sewage to be let into the channel. But in case the commissioners shall find said channel is not constructed in accordance with this Act, they shall file in the circuit court in their name as commissioners, a complaint against the corporation, which complaint shall describe how the work is deficient and how it fails to comply with this Act. On receipt of the complaint, the court shall issue an injunction without bond against the defendant, enjoining it from admitting water or sewage into the channel until the final order of the court. In case the court, upon hearing, determines that the channel is not constructed in accordance with this Act, the injunction shall continue until this Act is fully complied with.
The commissioners and engineer shall receive for their services $10 per day each, and their reasonable expenses and outlays for the time by them necessarily employed in the discharge of their duties. Such compensation shall be paid to them from the State Treasury. The sanitary district shall reimburse the State for all expenses and disbursements on account of the commission.
If any channel is constructed under this Act which shall discharge the sewage of a population of more than 300,000 into or through any river beyond or without the limits of the district constructing it, the channel shall be constructed in accordance with Section 23 of this Act, and if any such channel receives its supply of water from any river or channel connected with Lake Michigan it is considered as receiving its supply of water from Lake Michigan.
70 ILCS 2605/27