---
type: "Bill"
title: "Generally revise water supply requirements for coal-fired generating units"
description: "Generally revise water supply requirements for coal-fired generating units"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "HB 368"
citation: "Montana HB 368 (2025)"
classification: ["bill"]
subjects: ["Energy", "Environmental Protection", "Water"]
status: "enacted"
primary_sponsors: ["Gary Parry"]
version_count: 45
action_count: 53
vote_count: 8
first_action: "2024-12-14T15:15:24+00:00"
last_action: "2025-06-17T15:27:16+00:00"
source: "openstates"
source_identifier: "ocd-bill/cb403a12-b5e8-40a3-988d-048fa8340d51"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC3242?open_tab=sum"
source_hash: "304e2dd8d5e537a3c06f37049aa7ee87f6bfeaa6c15ece7e53a45e71e70fa444"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mt"]
---

# Montana HB 368 (2025) — Generally revise water supply requirements for coal-fired generating units

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **HB-368-Veto-Poll.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=328212)
2. **HB0368 Legal Review Note.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=278171)
3. **HB0368.001.002_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=283215)
4. **HB0368.001.005_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=286734)
5. **HB0368GovVeto.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322933)
6. **HB0368_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=278322)
7. **HB0368_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287494)
8. **HB0368_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287495)
9. **HB0368_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287496)
10. **HB0368_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287497)
11. **HB0368_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=277744)
12. **HB0368_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287499)
13. **HB0368_2(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287601)
14. **HB0368_2(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287603)
15. **HB0368_2(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287604)
16. **HB0368_2(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287605)
17. **HB0368_2(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287617)
18. **HB0368_2(15).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=292267)
19. **HB0368_2(16).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=296850)
20. **HB0368_2(17).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309580)
21. **HB0368_2(18).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309582)
22. **HB0368_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287500)
23. **HB0368_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287501)
24. **HB0368_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287588)
25. **HB0368_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287594)
26. **HB0368_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287596)
27. **HB0368_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287597)
28. **HB0368_2(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287598)
29. **HB0368_2(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287599)
30. **HB0368_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287498)
31. **HB0368_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309584)
32. **HB0368_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325375)
33. **HB0368_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325376)
34. **HB0368_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325377)
35. **HB0368_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=326795)
36. **HB0368_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309585)
37. **HB0368_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310221)
38. **HB0368_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310222)
39. **HB0368_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310223)
40. **HB0368_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311059)
41. **HB0368_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316953)
42. **HB0368_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320527)
43. **HB0368_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324257)
44. **HB0368_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309583)
45. **LC3242.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276078)

## Votes

- Do Pass — **98–1** (pass) · lower
- be_concurred_in — **22–0** (pass) · upper
- Do Pass — **100–0** (pass) · lower
- do_pass_as_amended — **14–0** (pass) · lower
- do_pass — **22–1** (pass) · lower
- Do Concur — **50–0** (pass) · upper
- be_concurred_in — **11–0** (pass) · upper
- Do Concur — **50–0** (pass) · upper

## Sponsors

- Gary Parry — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2024-12-14T15:15:24+00:00** (LC) Drafter Assigned
- **2025-01-27T20:59:27+00:00** (LC) Draft in Legal Review
- **2025-01-28T17:08:01+00:00** (LC) Draft in Edit
- **2025-01-28T20:46:22+00:00** (LC) Draft in Input/Proofing
- **2025-01-29T14:36:18+00:00** (LC) Draft in Final Drafter Review
- **2025-01-29T16:15:22+00:00** (LC) Draft in Assembly
- **2025-01-29T20:28:16+00:00** (LC) Draft Ready for Delivery
- **2025-01-30T21:42:20+00:00** (LC) Draft Delivered to Requester
- **2025-01-31T20:24:24+00:00** (H) Introduced
- **2025-02-03T17:35:38+00:00** (H) Referred to Committee - (H) Natural Resources `referral-committee`
- **2025-02-03T19:47:53+00:00** (H) First Reading `reading-1`
- **2025-02-04T16:34:50+00:00** (H) Hearing Canceled - (H) Natural Resources
- **2025-02-07T00:24:10+00:00** (H) Hearing Canceled - (H) Natural Resources
- **2025-02-14T01:17:23+00:00** (H) Hearing - (H) Natural Resources
- **2025-02-25T00:25:08+00:00** (H) Committee Executive Action--Bill Passed as Amended - (H) Natural Resources `committee-passage`
- **2025-02-25T16:53:00+00:00** (H) Fiscal Note Requested
- **2025-02-25T20:18:00+00:00** (H) Committee Report--Bill Passed as Amended - (H) Natural Resources `committee-passage`
- **2025-03-01T20:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-03-01T20:48:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2025-03-01T22:04:00+00:00** (H) Rereferred to Committee - (H) Appropriations `referral-committee, referral-committee`
- **2025-03-01T22:54:12+00:00** (H) Hearing - (H) Appropriations
- **2025-03-03T16:19:19+00:00** (H) Fiscal Note Received `receipt`
- **2025-03-03T17:31:22+00:00** (H) Fiscal Note Signed
- **2025-03-03T17:31:27+00:00** (H) Fiscal Note Printed
- **2025-03-03T18:07:06+00:00** (H) Committee Executive Action--Bill Passed - (H) Appropriations `committee-passage`
- **2025-03-04T01:36:48+00:00** (H) Committee Report--Bill Passed - (H) Appropriations `committee-passage`
- **2025-03-04T20:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-03-04T20:22:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2025-03-04T21:23:52+00:00** (H) Transmitted to Senate
- **2025-03-05T15:27:03+00:00** (S) Referred to Committee - (S) Natural Resources `referral-committee`
- **2025-03-06T16:50:34+00:00** (H) Revised Fiscal Note Received `receipt`
- **2025-03-06T17:33:36+00:00** (H) Revised Fiscal Note Signed
- **2025-03-06T18:24:35+00:00** (H) Revised Fiscal Note Printed
- **2025-03-12T14:47:38+00:00** (S) Hearing - (S) Natural Resources
- **2025-03-21T20:56:46+00:00** (S) Committee Executive Action--Bill Concurred - (S) Natural Resources
- **2025-03-24T20:34:00+00:00** (S) Committee Report--Bill Concurred - (S) Natural Resources
- **2025-04-10T14:30:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-04-10T15:00:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-11T01:00:01+00:00** (S) Rereferred to Committee - (S) Finance and Claims `referral-committee, referral-committee`
- **2025-04-11T02:57:27+00:00** (S) Hearing - (S) Finance and Claims
- **2025-04-11T19:40:35+00:00** (S) Committee Executive Action--Bill Concurred - (S) Finance and Claims
- **2025-04-11T21:23:00+00:00** (S) Committee Report--Bill Concurred - (S) Finance and Claims
- **2025-04-12T15:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-04-12T20:32:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2025-04-12T20:32:10+00:00** (H) Sent to Enrolling
- **2025-04-15T05:47:27+00:00** (H) Returned from Enrolling
- **2025-05-06T19:25:34+00:00** (H) Signed by Speaker `passage`
- **2025-05-07T18:00:11+00:00** (S) Signed by President `passage`
- **2025-05-07T19:57:30+00:00** (H) Transmitted to Governor `executive-receipt`
- **2025-05-16T20:00:00+00:00** (H) Vetoed by Governor `executive-veto`
- **2025-05-23T15:01:00+00:00** (H) Veto Override Vote Mail Poll in Progress
- **2025-06-16T15:19:59+00:00** (H) Veto Overridden by Legislature
- **2025-06-17T15:27:16+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/cb403a12-b5e8-40a3-988d-048fa8340d51`. Confidence: reported (aggregated from official Montana legislature records).