YOUR WATER & WASTEWATER RATES

Illinois American Water’s water and wastewater service rates are based on the cost of providing quality, reliable service to customers. Rates also pay for infrastructure upgrades Illinois American Water makes to support reliability and continued compliance with increasing water and wastewater regulations.

Illinois American Water is regulated by the Illinois Commerce Commission (ICC). The only way that Illinois American Water can adjust base rates is with the approval of the ICC.

On January 27, 2026, Illinois American Water filed a rate request with the ICC reflecting approximately $577 million in water and wastewater system investments to be made through 2027 to continue providing clean, safe, reliable and affordable service. The request reinforces the company’s commitment to implementing critical system upgrades and continuing to improve water quality and reliability for more than 1.3 million people served statewide.

The rate request includes nearly $421 million in water system infrastructure improvements and $156 million in wastewater system infrastructure improvements to be made over two years, from January 2026 to December 2027. Investments in the rate request include the replacement of approximately 42 miles of aging water and wastewater pipelines and the upgrading of storage tanks, wells, pumping stations, hydrants, meters, wastewater plants, and more across the state. Also included in the rate request is the ongoing replacement of lead water service lines across the state as well as improvements to water treatment facilities to address regulatory requirements and support continued safe drinking water treatment to residents and businesses.

Illinois American Water remains committed to affordability and offers programs to assist income-eligible customers, including the H2O Help to Others assistance program, budget billing options, flexible payment plans and an income-based discount program. More details can be found here.

You can learn more about the rate setting process here.

The filing can be viewed in full here. The related press release can be viewed here.

The below document(s) explain current 2025 rates by service district:
Illinois American Water Rates

Supporting Quality Infrastructure

Illinois American Water is dedicated to investing in local water and wastewater systems to provide reliable, high-quality service. Our Quality Infrastructure Program helps us to replace and update aging infrastructure on a timely basis.

The Quality Infrastructure Program (QIP) Surcharge funds company improvements to infrastructure replacements in some communities. You can learn more about your bill, as well as your rights and responsibilities here (English | Spanish).

The ICC has also created a Customer Bill of Rights for Illinois Water and Sewer Customers.

For more information about Illinois American Water’s tariffs and Part 280 rules, please see the links below:

Illinois American Water Rules and Regulations, Water and Wastewater Tariffs
Administrative Code Part 280 Rules Implementation Checklist