Investing in Illinois

At Illinois American Water, our investments in infrastructure are investments in our local communities. From 2013 to 2025, we invested nearly $2.5 billion in water and wastewater system infrastructure replacement and enhancements across the state. In 2025 alone, Illinois American Water invested more than $280 million in infrastructure work that included installing new pipes, pumps, hydrants, valves, lift stations, water treatment facilities, storage tanks, water quality systems and technology.

Across the U.S., water and wastewater systems are aging and underfunded. The average age of pipes is 55 years. When infrastructure is not maintained, it can waste water, leave people without the services they depend on, and be even more costly than proactively upgrading and repairing systems.

To combat this, Illinois American Water strategically and efficiently directs capital improvements where they are needed most. This involves making repairs to infrastructure and, when needed, replacement. Our systems and facilities continue to be resilient, reliable, dependable, and durable for our customers across the state.

2025 Infrastructure Investment Highlights

Northern Division
Bolingbrook, Chicago metro, Orland Hills, Santa Fe, and South Beloit service areas
2025 Investment Amount: $40.7 million 
Example projects:

• Terra Cotta Wastewater Treatment Facility Disc Filter Installation ($6 million) - The project installed new disc filters at the Terra Cotta Wastewater Treatment Facility, which replaced an existing gravity filter that was underperforming and had reached its end of useful life.  The new filter improves treatment performance, helps meet regulatory discharge requirements, and enhances copper removal capabilities of the treatment facility.  This project supports cleaner wastewater discharge and environmental protection.
• Nettle Creek – Installation of Second Well ($1 million) - The new well provides a second source of water strengthening the reliability and redundancy of the Nettle Creek water system.  This upgrade creates a backup source if the original well experiences operational issues, helping prevent potential disruptions to water service for customers.
• Homer Township Collection System Rehabilitation Project ($1.5 million) - This project rehabilitated approximately 10,000 feet of wastewater system pipes to reduce the impact of rain events on the system and replace areas of aged wastewater pipes.  This project addressed areas with previous system overflows, improving the reliability of the collection system and the protection of the environment.

Eastern Division Champaign, Fisher wastewater, Pontiac, Sterling, and Streator service areas
2025 Investment Amount: $39.56 million
Example projects:

• Champaign, Pontiac, and Streator Lead Service Line Replacements ($2.5 million) - Ongoing investigation and replacement of lead and qualified galvanized water service lines within Champaign, Pontiac, and Streator.  More than 550 service lines were inspected, of which 110 -plus lead or galvanized service lines were replaced, supporting our commitment to provide clean, safe water.
• Tolono Wastewater Treatment Plant Improvements ($1.4 million) - Improvements to various structures and equipment at the Tolono Wastewater Treatment Plant to enhance safety and operational needs at the facility.  These upgrades strengthen resiliency and add redundancy while continuing to meet regulatory requirements.
• Streator Water Filter Enhancement Project ($3.5 million) - Project to improve operation of the existing water treatment filters to enhance performance and creates water efficiencies by reducing the amount of water needed to perform filter cleaning operations.  Project will improve the resiliency and redundancy of the treatment plant while continuing to meet regulatory requirements.

Central Division Alton, Grafton, Godfrey wastewater, Hardin, Jerseyville, and Livingston service areas
2025 Investment Amount: $33.7 million
Example projects:

• Godfrey – Warren Levis Lagoon Berm Enhancement ($2.8 million) - This project replaced and enhanced the Warren Levis Wastewater Lagoon berm to address erosion concerns from the Rocky Fork Creek.  The project also included redevelopment of Rocky Fork Creek to reduce impact to the lagoon berm in the future.
• Jerseyville – Easton Lift Station Replacement ($2 million) - Replacement of the Easton Lift Station improves safety and operational needs with the existing lift station.  This project will strengthen reliability and add redundancy to the collection system in the area.
• Godfrey – West Delmar Avenue Roundabout Relocation ($1.8 million) - The project relocated water main to accommodate construction of West Delmar Avenue Roundabout in Godfrey by the Illinois Department of Transportation to improve the transportation and safety at the intersections of IL Route 3 with West Delmar Avenue and Pierce Lane.

Western Division Andalusia, Lincoln, Mt. Pulaski, Pekin, and Peoria service areas
2025 Investment Amount: $70 million
Example projects:

• Peoria Water Treatment Plant Chlorine Conversion Project ($6.2 million) - Replacement of the water treatment plant chlorine gas disinfection with a liquid chlorine disinfection system.  The project will reduce safety concerns with receiving and using chlorine gas within the community.
• Peoria Lead Service Line Replacements ($6.5 million) - Ongoing investigation and replacement of lead and qualified galvanized water service lines within Peoria.  This project included the replacement of approximately 700 water service lines during 2025 and investigated approximately 3,000 water services lines.

Southern Division Cairo, Granite City wastewater, Hardin County, Interurban, Rosiclare, and Shiloh wastewater service areas
2025 Investment Amount: $53 million
Example projects:

• East St Louis Water Treatment Plant Residual Pump Station Replacement Project ($12.6 million) - This project upgraded the filter wash residual pump station at the East St Louis Water Treatment Plant, replacing an aging lift station that had reached its end of useful life.  This boosted the plant’s resiliency and redundancy while also meeting new discharge requirements to the Mississippi flood levies by the US Corp of Engineers. 
• Raw Water Main Replacement ($2.2 million) - Replacement of a portion of the raw water transmission main that provides water to East St Louis and Granite City Water Treatment Plants that was impacted by construction activity in the area.  Project was able to replace a damaged portion of the main while maintaining required raw water flows to the water treatment plants, which prevented a disruption to water service.
• Rosiclare Wastewater Collection System Improvements ($2.9 million) - The project inspected and rehabilitated more than 20,000 feet of wastewater pipes in Rosiclare to reduce the impact of rain events and address areas of aged pipes. These upgrades addressed areas of previous system overflows and strengthened the reliability of the wastewater collection system.