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Customer Notices

The following notice is for Galena customers only.

Customer Notice - Galena Territory


Oakwood IL EPA PFAS Notice and Results

Dec 14, 2021
At Utility Services of Illinois, Inc. (USIL), we are committed to providing safe, reliable, cost effective water and wastewater services. Part of this commitment includes continuous industry-standard testing of our processes and water supply to ensure the continuing health and safety of every community we serve.

The Illinois Environmental Protection Agency (Illinois EPA) recently tested our Oakwood water system for compounds known as Per- and Polyfluoroalkyl Substances (PFAS) as part of a statewide assessment of community water supplies.

PFAS and PFOS, two compounds for which neither the United States Environmental Protection Agency (US EPA) nor the Illinois EPA have established a Maximum Contaminant Level, are among a class of synthetic chemicals (known as perfluoroalkyl substances or PFAS) that accumulate over time in the environment and our bodies.

Typical uses of PFAS include nonstick cookware, coatings on food packaging, fire-fighting foam, and many industrial applications. Studies are ongoing regarding the potential contaminative effect of these chemicals. Illinois EPA has set Health Based Guidance Levels for PFOA at two parts per trillion (ppt) and PFOS at 14 ppt. The US EPA has set separate and combined Health Advisory Levels (HALs) for PFOA and PFOS at 70 ppt. The HAL is based on the US EPA's determination that a lifetime exposure can cause human health effects.

Illinois EPA testing has determined that one or more PFAS compounds were detected in our water supply. The Illinois EPA results were higher than their Health Based Guidance Levels. However, these results were below the US EPA's HALs.

Utility Services of Illinois, Inc. will continue to monitor your community's Health Based
Guidance Levels and HALs. We look forward to the US EPA and Illinois EPA issuing clear and firm guidance that allows us to target our activity.

Results of the regular testing required by the US EPA and state regulatory agencies are made available to customers each year in Consumer Confidence Reports found on our website at Also, for more information, please visit