615 ILCS 50/6
Allocation of water to be diverted from the Lake Michigan watershed shall be made by the Department only after notice and hearing except where a water shortage emergency exists, threatening the public health, safety or welfare. Where a water shortage emergency exists, the Department may issue and enter an order for an emergency allocation, but shall, within 60 days thereafter, give notice and conduct a hearing regarding such emergency allocation. The effectiveness of an emergency allocation order shall be immediate and shall last until the Department has issued and entered an order after a hearing regarding the emergency allocation.
Conflicting claims relative to the application for allocation shall be made a matter of record at a hearing together with reconciliation by the Department. No allocation shall be in force or take effect until issuance and entry of an order by the Department. Notice of any hearing to be held by the Department shall be by publication not less than twice in a newspaper of general circulation in the immediate as well as the remote area which may be affected by such diversion; such publications shall be no longer than one week apart and the hearing shall be held within ten days following date of last publication. In addition, actual notice shall be given to the counties of Cook, DuPage, Kane, Lake, McHenry and Will, and to the City of Chicago, and to the Metropolitan Sanitary District of Greater Chicago.
615 ILCS 50/6