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Committee backs amendment to Naperville intergovernmental agreement, Warrenville to pay about $1.25M annually
Summary
Warrenville committee recommended council approval of the third amendment to an intergovernmental agreement with Naperville for wastewater treatment plant upgrades. Naperville estimates $233 million in multi‑phase work; Warrenville’s share is projected at roughly 9 percent, about $1.25 million per year for 20 years.
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The Warrenville Public Works & Infrastructure Committee voted to recommend that the City Council approve the third amendment to the intergovernmental agreement with the City of Naperville covering planned wastewater treatment plant upgrades.
Public Works Director Phil Kugler summarized the project, citing Naperville’s multi‑phase upgrade program with an estimated total cost of $233,000,000. Kugler said Warrenville’s share is calculated from the municipality’s proportion of plant flows in the year the work is bid; Warrenville’s historical share has been about 9 percent.
Daryl Blennis, director of water and wastewater for the City of Naperville, outlined project phases, current construction underway (ultraviolet disinfection, influent pump station work, South Plant expansion) and said the North Plant improvements will be the largest remaining phase and are moving toward design and bidding next year. Blennis said project costs will be refined as engineering design and bids are completed.
Kugler told the committee that Warrenville will begin paying $1,250,000 annually under the amendment, which over 20 years would total about $25,000,000. Kugler said existing customer fees collected under Warrenville’s fee schedule are expected to be sufficient to cover the estimated share; Finance director Dahlstrand was listed as available for questions in the meeting packet.
Committee members asked about timing, the accuracy of flow percentages and whether grant funding could offset costs. Blennis said Naperville had obtained a $450,000 DECA grant for one component, is pursuing direct appropriations, and had applied unsuccessfully for state revolving loan funds. He emphasized that Warrenville’s percentage will be determined in the year the work is bid.
Alderman Lockett moved to recommend council approval; the motion was seconded and carried with no recorded opposition. The committee forwarded the amendment to the City Council for final action.

