70 ILCS 2905/2-3
To lay out, locate, establish, construct, maintain and operate one or more drains, conduits, treatment plants, pumping plants, works, ditches, channels or outlets of such capacity and character as may be required for the treatment, carrying-off and disposal of swamp, stagnant or overflow water, sewage, industrial wastes and other drainage of such district, and to lay out, establish, construct, maintain and operate all such adjuncts or auxiliary improvements or works as may be necessary or proper for the accomplishment of the purposes intended; and to such end, to straighten, enlarge, divert or change the location, course or outlet of any stream or water course or divide the waters thereof and any part thereof by means of new channels, ditches or otherwise and to lay and construct such conduits, drains and pipes and to extend the same in and to the incorporated limits of any city, village or town for the purpose of connecting the same with the drains, mains, outlets or conduits constructed or maintained by such city, village, or town, for the carrying-off of the sewage and industrial wastes of such city, village or town, through the drains and conduits and into treatment plants, pumping plants and works of such district and to enter into contract or agreement with any such city, village or town, thereby granting permission for the use of such conduits, drains, treatment plants, pumping plants, and works of such district in the matter of treatment and disposal of sewage and industrial wastes of said city, village or town, for a reasonable compensation therefor to be paid by such city, village or town, and in case the costs of such conduits, drains, treatment plants, pumping plants or works is increased by reason of providing for the treatment, carrying-off and disposal of the sewage or industrial wastes of any city, village or town, then the increased cost thereof and the increased cost of operating and maintaining the same shall be borne by such city, village or town; and to receive payment of such compensation, and to do any and all things deemed necessary and proper in the furtherance of said purposes; and thereafter to maintain, repair, change, enlarge and add to such drains, ditches, channels, conduits, treatment plants, pumping plants, works, outlets and other improvements and work, as may be necessary or proper, to meet the future requirements for the purposes aforesaid, and when necessary for such purposes, any such work may extend beyond the limits of such district and the rights and powers of the district over any stream or water course, or work thereon, lying outside such district, shall to this extent, be the same as within said district: Provided, no taxes shall be levied upon any property outside of such district: And provided further, that the district shall be liable for all damages sustained beyond its limits in consequence of any work or improvement authorized hereunder. And provided that nothing in this Act contained shall be construed as superseding or in any manner limiting the provisions of the "Environmental Protection Act", enacted by the 76th General Assembly.
70 ILCS 2905/2-3