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SB4004Introduced in the Senate

AQUIFER PROTECTION ACT

IntroducedSenate Assignments

Introduced by Chapin Rose, District 51

What does this bill do?

Plain-English breakdown

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Official description

Creates the Data Center Water Transparency and Aquifer Protection Act. Provides that, beginning January 1, 2027, no data center operating within the State shall use water from the Mahomet Aquifer. Prohibits State agencies from issuing or renewing a permit authorizing a data center to withdraw groundwater from the Mahomet Aquifer. Requires existing data centers to transition to alternative water sources and cease all groundwater withdrawals from the Mahomet Aquifer by no later than January 1, 2028. Provides that a unit of local government may not enter into, enforce, or renew any nondisclosure agreement, confidentiality clause, or similar contractual provision with a data center that restricts the disclosure of information related to the data center's water use. Contains provisions concerning data confidentiality and public access. Establishes penalties for violations. Grants the Illinois Environmental Protection Agency rulemaking powers.

Where it stands

Added as Co-Sponsor Sen. Erica Harriss

June 17, 2026

How did lawmakers vote?

No recorded vote is available for this bill yet.

Bill history

  1. Filed with Secretary by Sen. Chapin Rose

  2. First Reading

  3. Referred to Assignments

  4. Assigned to Executive

  5. To AI and Social Media

  6. Rule 2-10 Committee Deadline Established As March 27, 2026

  7. Rule 2-10 Committee Deadline Established As April 24, 2026

  8. Rule 2-10 Committee/3rd Reading Deadline Established As May 15, 2026

  9. Senate Committee Amendment No. 1 Filed with Secretary by Sen. Chapin Rose

  10. Senate Committee Amendment No. 1 Referred to Assignments

  11. Senate Committee Amendment No. 1 Assignments Refers to Executive

  12. Senate Committee Amendment No. 1 To AI and Social Media

  13. Rule 2-10 Committee/3rd Reading Deadline Established As May 22, 2026

  14. Rule 3-9(a) / Re-referred to Assignments

  15. Senate Committee Amendment No. 1 Rule 3-9(a) / Re-referred to Assignments

  16. Added as Co-Sponsor Sen. Chris Balkema

  17. Added as Chief Co-Sponsor Sen. Sally J. Turner

  18. Added as Co-Sponsor Sen. Terri Bryant

  19. Added as Co-Sponsor Sen. Darby A. Hills

  20. Added as Co-Sponsor Sen. Sue Rezin

  21. Added as Co-Sponsor Sen. Erica Harriss

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