Illinois American Water today filed a request with the Illinois Commerce Commission (ICC) for new rates to support approximately $577 million in water and wastewater system investments from January 2026 through December 2027. The request reinforces the company’s commitment to implementing critical system upgrades and continuing to improve water quality and reliability for its more than 1.3 million people served statewide.
“We carefully and strategically plan and invest in our water and wastewater systems,” said Rebecca Losli, President of Illinois American Water. “These investments directly benefit the communities we proudly serve and provide our customers with even more reliable service and improved water quality—from treatment to the tap. It underscores our employees’ commitment to the health and safety of our customers and the communities we serve.”
The proposed rate change will support the company’s plans to invest approximately $577 million through 2027 to modernize and strengthen its water and wastewater systems in communities across Illinois. These investments will include the replacement of 42 miles of aging water and wastewater pipeline, upgrading of storage tanks, wells, pumping stations, hydrants, meters and wastewater plants, as well as ongoing replacement of lead service lines and improvements to treatment facilities to address regulatory requirements, including emerging contaminants such as PFAS in drinking water.
Under the company’s proposal, if approved, the typical residential water customer using 3,500 gallons of water would see an increase of approximately $14 per month, depending on the service area. Typical customers served by sanitary wastewater systems using 3,500 gallons of water would see an increase of approximately $28 per month.
Part of the company’s proposal to the ICC includes a modified allowance rate for residential water users to help alleviate financial pressures on low consumption customers and increase affordability. Under the proposal, residential water rates would be billed at a discount rate for the first 2,000 gallons of water.