Renovation of a water / sewer project in Wilmette, Illinois. Conceptual plans call for the renovation of a water / sewer project.

The Water Plant has 10 multimedia filters. The underdrain systems of filters have multiple functions including: Provide structural support to the filter media. Collect the filtered water and deliver it to the clear-wells for storage and pumping. Provide the basis for how the backwash system will function. The current underdrain system for the 1933 filters was installed in 1978. The Water Plant has not had performance issues (operationally or water quality) with the 1933 filters. However, the typical life expectancy of an underdrain system is 30-50 years. Additionally, the lead time for a typical underdrain project could take up to 3 years to design and install. Failure in the underdrain could reduce the water plant capacity up to 22% and could affect the water quality produced. The projected cost for the design and installation of new underdrain system is $2,550,000. For 2023, it is proposed to: Conduct a conceptual study on treatment process improvements to 1933 filters that would meet the forthcoming regulations of Per- and Polyfluoroalkyl Substances (PFAS). Study changes for design decisions on the type of the underdrain and media sizing of the 1933 filters. Additionally, the conceptual study would allow us to submit for an IEPA loan with enough details to be placed on the loans list. The estimated cost of the study is $100,000. As of January 23, 2023, this project is in the conceptual phase. An engineer has not been selected. This project is included in the Village of Wilmette's FY 2023-2032 Budget CIP and funding allotted for 2023, 2024, and 2025. *Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.