---
type: "Bill"
title: "State Water Resources Control Board: water rights and usage: civil penalties."
description: "(1) Under existing law, the diversion or use of water other than as authorized by specified provisions of law is a trespass, subject to specified civil liability."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20232024"
identifier: "AB 460"
citation: "California AB 460 (20232024)"
classification: ["bill"]
subjects: ["State Water Resources Control Board", "civil penalties", "water rights and usage"]
status: "enacted"
primary_sponsors: ["Bauer-Kahan"]
version_count: 10
action_count: 32
vote_count: 10
first_action: "2023-02-06"
last_action: "2024-09-22"
source: "openstates"
source_identifier: "ocd-bill/4700afb6-9353-4c24-bac8-7162bbedc924"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202320240AB460"
source_hash: "a19ec78dd27ea6e8755fd754fdacfa352d2af7ce1c0b79819f37af91bbea4e62"
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-ca"]
---

# California AB 460 (20232024) — State Water Resources Control Board: water rights and usage: civil penalties.

(1) Under existing law, the diversion or use of water other than as authorized by specified provisions of law is a trespass, subject to specified civil liability.

## Version chain

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

1. **02/06/23 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB460&version=20230AB46099INT)
2. **03/30/23 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB460&version=20230AB46098AMD)
3. **04/26/23 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB460&version=20230AB46097AMD)
4. **05/18/23 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB460&version=20230AB46096AMD)
5. **06/03/24 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB460&version=20230AB46095AMD)
6. **06/12/24 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB460&version=20230AB46094AMD)
7. **08/15/24 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB460&version=20230AB46093AMD)
8. **09/22/24 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB460&version=20230AB46091CHP)
9. **AB460** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202320240AB460)
10. **09/04/24 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB460&version=20230AB46092ENR)

## Votes

- Do pass as amended and be re-referred to the Committee on [Appropriations] — **7–2** (pass) · lower
- Do pass as amended. — **11–4** (pass) · lower
- Do pass as amended, but first amend, and re-refer to the Committee on [Judiciary] — **10–0** (pass) · upper
- Do pass, but first be re-referred to the Committee on [Appropriations] — **11–0** (pass) · upper
- 3rd Reading AB460 Bauer-Kahan et al. By Laird — **38–2** (pass) · upper
- Do pass as amended — **6–1** (pass) · upper
- Do pass and be re-referred to the Committee on [Judiciary] — **9–4** (pass) · lower
- Placed on suspense file — **7–0** (pass) · upper
- AB 460 Bauer-Kahan Assembly Third Reading — **43–20** (pass) · lower
- AB 460 Bauer-Kahan Concurrence in Senate Amendments — **65–5** (pass) · lower

## Sponsors

- Bauer-Kahan — primary (person)
- Friedman — principal coauthor (person)

## Timeline

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

- **2023-02-06** Read first time. To print. `reading-1`
- **2023-02-07** From printer. May be heard in committee March 9.
- **2023-02-17** Referred to Coms. on W., P., & W. and JUD. `referral-committee`
- **2023-03-30** From committee chair, with author's amendments: Amend, and re-refer to Com. on W., P., & W. Read second time and amended. `amendment-introduction, amendment-passage, reading-1, reading-2`
- **2023-04-03** Re-referred to Com. on W., P., & W. `referral-committee`
- **2023-04-19** From committee: Do pass and re-refer to Com. on JUD. (Ayes 9. Noes 4.) (April 18). Re-referred to Com. on JUD. `committee-passage, committee-passage-favorable, referral-committee`
- **2023-04-25** From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 7. Noes 2.) (April 25). `amendment-introduction, amendment-passage, committee-passage, referral-committee`
- **2023-04-26** Read second time and amended. `amendment-passage, reading-1, reading-2`
- **2023-04-27** Re-referred to Com. on APPR. `referral-committee`
- **2023-05-17** In committee: Set, first hearing. Referred to APPR. suspense file. `referral-committee`
- **2023-05-18** Joint Rule 62(a), file notice suspended. (Page 1580.)
- **2023-05-18** From committee: Amend, and do pass as amended. (Ayes 11. Noes 4.) (May 18). `amendment-introduction, amendment-passage, committee-passage`
- **2023-05-18** Read second time and amended. Ordered returned to second reading. `amendment-passage, reading-1, reading-2`
- **2023-05-22** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2023-05-30** Read third time. Passed. Ordered to the Senate. (Ayes 43. Noes 20. Page 1932.) `passage, reading-1, reading-3`
- **2023-05-31** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2023-06-07** Referred to Coms. on N.R. & W. and JUD. `referral-committee`
- **2023-06-27** In committee: Set, first hearing. Hearing canceled at the request of author.
- **2024-06-03** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on N.R. & W. `amendment-introduction, amendment-passage, reading-1, reading-2, referral-committee`
- **2024-06-11** From committee: Amend, and do pass as amended and re-refer to Com. on JUD. (Ayes 10. Noes 0.) (June 11). `amendment-introduction, amendment-passage, committee-passage, referral-committee`
- **2024-06-12** Read second time and amended. Re-referred to Com. on JUD. `amendment-passage, reading-1, reading-2, referral-committee`
- **2024-06-26** From committee: Do pass and re-refer to Com. on APPR. (Ayes 11. Noes 0.) (June 25). Re-referred to Com. on APPR. `committee-passage, committee-passage-favorable, referral-committee`
- **2024-08-05** In committee: Referred to APPR suspense file. `referral-committee`
- **2024-08-15** From committee: Amend, and do pass as amended. (Ayes 6. Noes 1.) (August 15). `amendment-introduction, amendment-passage, committee-passage`
- **2024-08-15** Read second time and amended. Ordered returned to second reading. `amendment-passage, reading-1, reading-2`
- **2024-08-19** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2024-08-29** Read third time. Passed. Ordered to the Assembly. (Ayes 38. Noes 2.). `passage, reading-1, reading-3`
- **2024-08-30** In Assembly. Concurrence in Senate amendments pending.
- **2024-08-30** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 65. Noes 5.). `amendment-passage, committee-passage-favorable`
- **2024-09-11** Enrolled and presented to the Governor at 4 p.m.
- **2024-09-22** Approved by the Governor. `executive-signature`
- **2024-09-22** Chaptered by Secretary of State - Chapter 342, Statutes of 2024. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/4700afb6-9353-4c24-bac8-7162bbedc924`. Confidence: reported (aggregated from official California legislature records).