The Public Water Infrastructure Program is Closed

The State of Illinois’ Public Water Infrastructure Energy Assessment Program formally ended on July 1, 2025. This landing page, along with its associated links and resources, will remain available as a program archive.

EnergySense is still available to help your water or wastewater facility explore energy-saving opportunities! Visit our "Contact" page to request support.

Wastewater treatment plant

Assessed Facilities Map

Kincaid Wastewater Treatment Plant

Collinsville Wastewater Treatment Plant

Resources

Case Study: Smart Metering for Water Treatment Plants

Every drop of water counts. Even though Illinois is known for its abundant water resources, some areas of our state […]

Wastewater Treatment and Reuse

In May 2024, Illinois amended Public Act 103.0801 to clarify the potential for use of treated wastewater. It enablesthe Illinois […]

Lagoon Aeration Strategies for Increased Energy Efficiency

Wastewater treatment facilities use aeration to provide oxygen that meets the required biological oxygen demand (BOD) for their processes. Energy […]

Activated Sludge Aeration Strategies for Increased Energy Efficiency

Wastewater treatment facilities use aeration to provide oxygen that meets the required biological oxygen demand (BOD) for their processes. Energy […]

Case Study: No-Cost and Low-Cost Measures to Improve Energy Efficiency at WWTPs

Energy represents a significant expense across all processes at wastewater treatment systems, after operations and maintenance costs. The most energy-intensive […]

Case Study: Du Quoin Wastewater Treatment Plant

The Du Quoin Wastewater Treatment Plant (WWTP) in southern Illinois runs a Schrieber Plant with an average flow of 2.4 […]

The Path to Resilience: Maximizing Energy Savings at Wastewater Treatment Plants

Wastewater treatment facilities can account for up to 30% of a municipality’s energy use. Plants that set energy efficiency as […]

Water Pumping Efficiency Technical Tip

Fluid pumping is a major component of many water and wastewater plants’ energy consumption. For most potable water plants, pumping […]

Kishwaukee Water Reclamation District WWTP Case Study

The Kishwaukee Water Reclamation District (KWRD) has been pursuing energy efficiency and energy recovery opportunities for many years. In October […]

Village of Heyworth WWTP Case Study

In 2022, the Village of Heyworth wastewater treatment plant, a 1.0 MGD lagoon system, faced an electric supply hike of […]

Herrin WWTP Case Study

In 2018, SEDAC performed an energy assessment for the Herrin IL Wastewater Treatment Plant (WWTP). The assessment identified several energy […]

Algal Treatment for Wastewater Treatment Plants

A new process to enhance water treatment and minimize energy consumption is gaining traction in Water Resource Recovery. The concept […]

Illinois EPA Public Water Infrastructure Energy Efficiency Program Flyer

Take a look at our program flyer for information on no-cost energy assessments, top energy savings opportunities, and realized savings […]

Lift Station Optimization in Wastewater Treatment Plants

Lift stations move wastewater from lower to higher elevation, particularly where the elevation of wastewater sources is not sufficient for […]

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Benchmarking for Water and Wastewater Treatment Plants

Energy benchmarking is an effective and convenient approach to tracking and analyzing energy use of a water treatment plant (WTP) […]

Using SCADA to Improve and Assess Operations

A Supervisory Control & Data Acquisition (SCADA) system is an assemblage of computer and communications equipment that gathers, monitors, and […]

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Efficient Nitrogen and Phosphorous Removal

Wastewater treatment facilities are commonly required to implement treatment processes that reduce effluent nutrient concentrations to levels that regulators deem […]

Scoreboard showing plant's education production and use.

Downers Grove Net Zero Wastewater Treatment with Bio-gas

Innovative leadership and collaboration with the Illinois Clean Energy Community Foundation has allowed the Downers Grove Sanitary District WWTP to become a net-zero energy plant. Read how the district has reduced costs and increased resiliency by running their plant with bio-gas produced on site.

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Caseyville Wastewater Treatment Plant Case Study

Recently, the Caseyville Township Water Reclamation Facility received a free facility assessment from Illinois EPA's Wastewater Treatment Plant Energy Assessment […]

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Village of Annawan Wastewater Treatment Plant

Most energy assessments identify energy efficiency measures to save facilities between 10% and 30% on annual energy costs. Sometimes the […]