65 ILCS 90/3

An on-site wastewater disposal zone may be formed for the following purposes:

(a) to collect, treat, reclaim, or dispose of wastewater;

(b) to acquire, design, own, construct, install, operate, monitor, regulate, inspect, rehabilitate, modify and maintain existing and new on-site wastewater disposal systems, within the zone in a manner which will promote environmental quality, prevent the pollution, waste, and contamination of water, abate nuisances, and protect public health;

(c) to conduct investigations, make analyses, and monitor conditions with regard to water quality within the zone;

(d) to apply for, obtain and utilize federal and State funds for any of the purposes specified in this Act;

(e) to adopt and enforce reasonable rules and regulations necessary to implement the purposes of the zone. Such rules and regulations may be adopted only after the corporate authorities conduct a public hearing after giving public notice in a newspaper of general circulation within the municipality;

(f) to contract for the exercise of any of the aforementioned powers even if any such contract shall extend for longer than one year; and

(g) to impose a tax upon all real property located in the zone for the purpose of retiring bonds issued pursuant to Section 6 of this Act, paying the costs of construction, operation and maintenance of the wastewater disposal system, and to impose a user charge to defray the costs of routine operation and maintenance.