Illinois

    Illinois features a mix of large municipal systems and investor-owned utilities serving diverse communities.

    Drinking Water Utilities

    1,789

    Wastewater Utilities

    1,245

    Key Compliance Drivers

    Lead service lines; PFAS; nutrient reduction; capacity challenges

    Lead service line replacement requirements under state law, PFAS monitoring at Class A sites, and nutrient reduction for Mississippi River watershed compliance are key drivers. Many downstate systems face capacity and compliance challenges.

    Vendor Implications

    Chicago Water drives regional procurement. Downstate systems face funding gaps.

    Drinking Water Primacy Agency

    Illinois EPA

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    Wastewater / NPDES Agency

    Illinois EPA

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    SRF / Funding Authority

    Illinois EPA – Loan Programs

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    Public Utility Commission

    Illinois Commerce Commission

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    Regulates investor-owned water and sewer utilities.

    Municipal Oversight

    Municipal utilities operate under home rule authority.

    Available Funding Programs

    • •Public Water Supply Loan Program
    • •Water Pollution Control Loan