IL HB 4941

enacted

OLD UNDERGROUND STORAGE TANKS

Illinois · 104th General Assembly, 2026 Session · lower

Follow this bill’s action updates (Atom)

Subscribe in a feed reader. The feed covers recorded actions from the last 30 days; Bill Commons may record an action after it happened at the legislature.

Quick answers

Did IL HB 4941 pass?

Yes. IL HB 4941 has been enacted into law. Latest recorded action (2026-07-31): Public Act . . . . . . . . . 104-0688

What is IL HB 4941 about?

IL HB 4941 is a bill in the 104th General Assembly, 2026 Session titled “OLD UNDERGROUND STORAGE TANKS”.

Who sponsors IL HB 4941?

Joyce Mason, Julie A. Morrison are the primary sponsors of IL HB 4941, joined by 5 cosponsors.

Introduced: 2026-03-12
Latest action: 2026-07-31 — Public Act . . . . . . . . . 104-0688
Bill type: bill
Last updated: —

Committees

Not provided by source.

Action timeline

Newest first

2026-07-31
Public Act . . . . . . . . . 104-0688
became-law
2026-07-31
Effective Date January 1, 2027
2026-07-31
Governor Approved
executive-signature
2026-06-18
Sent to the Governor
executive-receipt
2026-05-21
Passed Both Houses
2026-05-21
Third Reading - Passed; 059-000-000
passage,reading-3
2026-05-21
Added as Alternate Co-Sponsor Sen. Jason Plummer
2026-05-19
Placed on Calendar Order of 3rd Reading **
2026-05-14
Placed on Calendar Order of 3rd Reading May 18, 2026
2026-05-14
Second Reading
reading-2
2026-05-07
Added as Alternate Co-Sponsor Sen. Andrew S. Chesney
2026-05-07
Placed on Calendar Order of 2nd Reading May 12, 2026
reading-2
2026-05-07
Do Pass Environment and Conservation; 008-000-000
2026-04-28
Assigned to Environment and Conservation
referral-committee
2026-04-21
Referred to Assignments
2026-04-21
First Reading
reading-1
2026-04-21
Chief Senate Sponsor Sen. Julie A. Morrison
2026-04-21
Placed on Calendar Order of First Reading
reading-1
2026-04-21
Arrive in Senate
introduction
2026-04-16
Added Co-Sponsor Rep. Diane Blair-Sherlock
2026-04-16
Added Chief Co-Sponsor Rep. Anthony DeLuca
2026-04-16
House Floor Amendment No. 2 Tabled
amendment-failure
2026-04-16
Third Reading - Short Debate - Passed 109-000-000
passage,reading-3
2026-04-16
Placed on Calendar Order of 3rd Reading - Short Debate
2026-04-16
House Floor Amendment No. 3 Adopted
amendment-passage
2026-04-16
House Floor Amendment No. 2 Withdrawn by Rep. Joyce Mason
2026-04-15
House Floor Amendment No. 3 Recommends Be Adopted Energy & Environment Committee; 024-000-000
committee-passage-favorable
2026-04-14
House Floor Amendment No. 3 Rules Refers to Energy & Environment Committee
2026-04-14
House Floor Amendment No. 3 Referred to Rules Committee
2026-04-14
House Floor Amendment No. 3 Filed with Clerk by Rep. Joyce Mason
amendment-introduction
2026-04-10
Held on Calendar Order of Second Reading - Short Debate
reading-2
2026-04-10
Second Reading - Short Debate
reading-2
2026-04-08
Added Chief Co-Sponsor Rep. Dagmara Avelar
2026-04-07
House Floor Amendment No. 2 Recommends Be Adopted Energy & Environment Committee; 025-000-000
committee-passage-favorable
2026-03-24
House Floor Amendment No. 2 Rules Refers to Energy & Environment Committee
2026-03-19
House Floor Amendment No. 2 Referred to Rules Committee
2026-03-19
House Floor Amendment No. 2 Filed with Clerk by Rep. Joyce Mason
amendment-introduction
2026-03-19
Placed on Calendar 2nd Reading - Short Debate
reading-2
2026-03-18
House Committee Amendment No. 1 Tabled
amendment-failure
2026-03-18
Do Pass / Short Debate Energy & Environment Committee; 027-000-000
2026-03-18
House Committee Amendment No. 1 Rules Refers to Energy & Environment Committee
2026-03-12
House Committee Amendment No. 1 Referred to Rules Committee
2026-03-12
House Committee Amendment No. 1 Filed with Clerk by Rep. Joyce Mason
amendment-introduction
2026-03-12
Assigned to Energy & Environment Committee
referral-committee
2026-02-06
Referred to Rules Committee
2026-02-06
First Reading
reading-1
2026-02-04
Filed with the Clerk by Rep. Joyce Mason
filing

Versions

IntroducedCompare
EngrossedCompare
EnrolledCompare
House Amendment 001Compare
House Amendment 002Compare
House Amendment 003Compare
(document, no version)Compare

Documents

Votes

Energy & Environment
2026-03-18 · pass · 27-0
Member-level votes (29)
- Avelar, Dagmara: yes
- Ammons, Carol: yes
- Bunting, Jason R: yes
- Blair-Sherlock, Diane: yes
- Cochran, Justin: yes
- Deering, Regan: yes
- Davis, William "Will": yes
- Evans Jr., Marcus C: yes
- Du Buclet, Kimberly: yes
- Fritts, Bradley: yes
- Faver Dias, Laura: yes
- Halbrook, Brad: yes
- Gordon-Booth, Jehan: yes
- Johnson, Gregg: yes
- Harper, Sonya M: yes
- Mason, Joyce: yes
- Katz Muhl, Tracy: yes
- Miller, Chris: yes
- Meier, Charles: yes
- Ness, Suzanne M: yes
- Moeller, Anna: yes
- Ortíz, Aarón M: yes
- Severin, Dave: yes
- Rashid, Abdelnasser: yes
- Wilhour, Blaine: yes
- West II, Maurice A: yes
- Williams, Ann M: yes
- Davis, Jed: not voting
- Niemerg, Adam M: not voting
Energy & Environment, Amendment 2
2026-04-07 · pass · 25-0
Member-level votes (29)
- Blair-Sherlock, Diane: yes
- Ammons, Carol: yes
- Bunting, Jason R: yes
- Briel, Amy: yes
- Davis, Jed: yes
- Du Buclet, Kimberly: yes
- Deering, Regan: yes
- Fritts, Bradley: yes
- Faver Dias, Laura: yes
- Harper, Sonya M: yes
- Halbrook, Brad: yes
- Jiménez, Lilian: yes
- Hernandez, Norma: yes
- Meier, Charles: yes
- Mason, Joyce: yes
- Moeller, Anna: yes
- Miller, Chris: yes
- Ortíz, Aarón M: yes
- Niemerg, Adam M: yes
- Severin, Dave: yes
- Rashid, Abdelnasser: yes
- Stava, Anne: yes
- West II, Maurice A: yes
- Walsh Jr., Lawrence "Larry": yes
- Williams, Jawaharial: yes
- Davis, William "Will": not voting
- Tarver II, Curtis J: not voting
- Williams, Ann M: not voting
- Wilhour, Blaine: not voting
Energy & Environment, Amendment 3
2026-04-15 · pass · 24-0
Member-level votes (29)
- Briel, Amy: yes
- Blair-Sherlock, Diane: yes
- Davis, Jed: yes
- Bunting, Jason R: yes
- Deering, Regan: yes
- Davis, William "Will": yes
- Faver Dias, Laura: yes
- Du Buclet, Kimberly: yes
- Halbrook, Brad: yes
- Fritts, Bradley: yes
- Hernandez, Norma: yes
- Harper, Sonya M: yes
- Meier, Charles: yes
- Mason, Joyce: yes
- Moeller, Anna: yes
- Miller, Chris: yes
- Niemerg, Adam M: yes
- Ness, Suzanne M: yes
- Rashid, Abdelnasser: yes
- Ortíz, Aarón M: yes
- Severin, Dave: yes
- Walsh Jr., Lawrence "Larry": yes
- Williams, Ann M: yes
- Wilhour, Blaine: yes
- Mah, Theresa: not voting
- Jiménez, Lilian: not voting
- Stava, Anne: not voting
- Tarver II, Curtis J: not voting
- Williams, Jawaharial: not voting
Third Reading
2026-04-16 · pass · 109-0
Member-level votes (117)
- Mussman: yes
- Grasse: yes
- Ammons: yes
- Ness: yes
- Guerrero-Cuellar: yes
- Andrade: yes
- Niemerg: yes
- Guzzardi: yes
- Avelar: yes
- Olickal: yes
- Benton: yes
- Ortíz: yes
- Halbrook: yes
- Blair-Sherlock: yes
- Rashid: yes
- Hammond: yes
- Briel: yes
- Reick: yes
- Hanson: yes
- Buckner: yes
- Rita: yes
- Harper: yes
- Bunting: yes
- Hauter: yes
- Cabello: yes
- Hernandez, Barbara: yes
- Canty: yes
- Sanalitro: yes
- Hernandez, Lisa: yes
- Cassidy: yes
- Scherer: yes
- Hernandez, Norma: yes
- Chung: yes
- Schmidt: yes
- Hirschauer: yes
- Cochran: yes
- Schweizer: yes
- Hoffman: yes
- Coffey: yes
- Severin: yes
- Crawford: yes
- Sheehan: yes
- Jacobs: yes
- Crespo: yes
- Slaughter: yes
- Jiménez: yes
- Croke: yes
- Smith: yes
- Johnson: yes
- Davidsmeyer: yes
- Sosnowski: yes
- Jones: yes
- Davis, Jed: yes
- Katz Muhl: yes
- Davis, Lisa: yes
- Stava: yes
- Keicher: yes
- Davis, Will: yes
- Kelly: yes
- Deering: yes
- Stuart: yes
- Kifowit: yes
- DeLaRosa: yes
- Swanson: yes
- La Ha: yes
- Delgado: yes
- Syed: yes
- LaPointe: yes
- DeLuca: yes
- Tarver: yes
- Lilly: yes
- Deuter: yes
- Mah: yes
- Didech: yes
- Ugaste: yes
- Manley: yes
- Du Buclet: yes
- Vella: yes
- Mason: yes
- Elik: yes
- Walsh: yes
- Mayfield: yes
- Evans: yes
- Weaver: yes
- McCombie: yes
- Faver Dias: yes
- Weber: yes
- McLaughlin: yes
- West: yes
- Meier: yes
- Friess: yes
- Wilhour: yes
- Meyers-Martin: yes
- Fritts: yes
- Williams, Ann: yes
- Miller: yes
- Gabel: yes
- Williams, Jawaharial: yes
- Moeller: yes
- Gill: yes
- Windhorst: yes
- Moore: yes
- Gong-Gershowitz: yes
- Yang Rohr: yes
- Morgan: yes
- González: yes
- Morris: yes
- Gordon-Booth: yes
- Haas: excused
- Rosenthal: excused
- Ryan: excused
- Huynh: excused
- Spain: excused
- Stephens: excused
- Tipsword: excused
- Ford: excused
- Grant: excused
Environment and Conservation
2026-05-07 · pass · 8-0
Member-level votes (10)
- DeWitte, Donald P: yes
- Chesney, Andrew S: yes
- Ellman, Laura: yes
- Johnson, Adriane: yes
- Plummer, Jason: yes
- Morrison, Julie A: yes
- Walker, Mark L: yes
- Villa, Karina: yes
- Feigenholtz, Sara: not voting
- Fine, Laura: not voting
Third Reading
2026-05-21 · pass · 59-0
Member-level votes (58)
- Simmons: yes
- Joyce: yes
- Faraci: yes
- Anderson: yes
- Sims: yes
- Koehler: yes
- Feigenholtz: yes
- Aquino: yes
- Stadelman: yes
- Lewis: yes
- Fine: yes
- Arellano, L.: yes
- Syverson: yes
- Lightford: yes
- Fowler: yes
- Balkema: yes
- Tracy: yes
- Loughran Cappel: yes
- Glowiak Hilton: yes
- Belt: yes
- Turner, D.: yes
- Martwick: yes
- Guzmán: yes
- Bryant: yes
- Turner, S.: yes
- McClure: yes
- Halpin: yes
- Castro: yes
- Ventura: yes
- Morrison: yes
- Harris, N.: yes
- Cervantes: yes
- Villa: yes
- Murphy: yes
- Harriss, E.: yes
- Chesney: yes
- Villanueva: yes
- Peters: yes
- Hastings: yes
- Collins: yes
- Villivalam: yes
- Plummer: yes
- Hills: yes
- Cunningham: yes
- Walker: yes
- Porfirio: yes
- Holmes: yes
- Curran: yes
- Wilcox: yes
- Preston: yes
- Hunter: yes
- DeWitte: yes
- Rezin: yes
- Johnson: yes
- Edly-Allen: yes
- Rose: yes
- Jones, E.: yes
- Ellman: yes

Related bills

No related bills recorded for this bill.

Official source

https://ilga.gov/Legislation/BillStatus?DocNum=4941&GAID=18&DocTypeID=HB&LegId=166291&SessionID=114

Attribution

Data from openstates_api_sync, retrieved 2026-08-06T01:38:18.246809Z

Inspect retained evidence for changes recorded after evidence tracking began:

Source and document changes Status and relationship changes

Session-wide evidence can include changes to other bills:

Bulk imports for this session Session dates and activity

Use this data

Every field on this page is available from the free public API — no key or licence required. Fetch this bill as JSON: GET /api/v1/bills?jurisdiction=IL&identifier=HB 4941. See the API docs or the MCP server for AI assistants.

Known limitations

Sponsor party and chamber affiliation are not yet captured by this API.
Committee referrals are not yet captured.

See the methodology page for data sources and limitations.