republic-os/legislation/us/states/ca/20252026/ab-1466.md

type, title, description, jurisdiction, legislature, session, identifier, citation, classification, subjects, status, primary_sponsors, version_count, action_count, vote_count, first_action, last_action, source, source_identifier, source_url, source_hash, vintage, source_snapshot, retrieved_at, confidence, tags

type	title	description	jurisdiction	legislature	session	identifier	citation	classification	subjects	status	primary_sponsors	version_count	action_count	vote_count	first_action	last_action	source	source_identifier	source_url	source_hash	vintage	source_snapshot	retrieved_at	confidence	tags
Bill	Groundwater adjudication.	(1) Existing law establishes procedures for the comprehensive adjudication of groundwater rights in civil court. Under existing law, if the court finds that claims of right to extract or divert only minor quantities of water, as defined, would not have a material effect on the groundwater rights of other parties, the court may exempt those claimants from the proceedings, except as specified. Existing law further prescribes that a judgment in a comprehensive adjudication to determine rights to extract groundwater in a basin is not binding on, among others, claimants whose claims have been exempted.	us/states/ca	California Legislature	20252026	AB 1466	California AB 1466 (20252026)	bill	Groundwateradjudication	enacted	Hart	8	28	8	2025-02-21	2025-10-11	openstates	ocd-bill/3d91e1a1-d18b-4740-b769-325399807944	http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202520260AB1466	dd10d0f8104c2835190ac022828f6a7cefcd78d30c11219537fbf806cd59c62c	2026-07-01	https://data.openstates.org/daily/2026-07-01/public.pgdump	2026-07-06	reported	legislation bill us-ca

California AB 1466 (20252026) — Groundwater adjudication.

(1) Existing law establishes procedures for the comprehensive adjudication of groundwater rights in civil court. Under existing law, if the court finds that claims of right to extract or divert only minor quantities of water, as defined, would not have a material effect on the groundwater rights of other parties, the court may exempt those claimants from the proceedings, except as specified. Existing law further prescribes that a judgment in a comprehensive adjudication to determine rights to extract groundwater in a basin is not binding on, among others, claimants whose claims have been exempted.

Version chain

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

1. 02/21/25 - Introduced (filed) — source
2. 04/01/25 - Amended Assembly (committee substitute) — source
3. 06/26/25 - Amended Senate (committee substitute) — source
4. 07/17/25 - Amended Senate (committee substitute) — source
5. 09/04/25 - Amended Senate (committee substitute) — source
6. 10/11/25 - Chaptered (committee substitute) — source
7. AB1466 (committee substitute) — source
8. 09/15/25 - Enrolled (enrolled) — source

Votes

• Do pass, but first be re-referred to the Committee on [Judiciary] — 5–2 (pass) · upper
• Do pass and be re-referred to the Committee on [Appropriations] — 9–3 (pass) · lower
• 3rd Reading AB1466 Hart By Laird — 35–5 (pass) · upper
• AB 1466 Hart Concurrence in Senate Amendments — 69–1 (pass) · lower
• Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations] — 11–2 (pass) · upper
• Do pass. — 11–4 (pass) · lower
• Do pass and be re-referred to the Committee on [Judiciary] — 9–4 (pass) · lower
• AB 1466 Hart Assembly Third Reading — 50–20 (pass) · lower

Sponsors

• Hart — primary (person)

Timeline

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

• 2025-02-21 Introduced. To print. introduction
• 2025-02-22 From printer. May be heard in committee March 24.
• 2025-02-24 Read first time. reading-1
• 2025-03-17 Referred to Coms. on W. P., & W. and JUD. referral-committee
• 2025-04-01 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
• 2025-04-02 Re-referred to Com. on W. P., & W. referral-committee
• 2025-04-09 From committee: Do pass and re-refer to Com. on JUD. (Ayes 9. Noes 4.) (April 8). Re-referred to Com. on JUD. committee-passage, committee-passage-favorable, referral-committee
• 2025-04-22 From committee: Do pass and re-refer to Com. on APPR. (Ayes 9. Noes 3.) (April 22). Re-referred to Com. on APPR. committee-passage, committee-passage-favorable, referral-committee
• 2025-05-07 From committee: Do pass. (Ayes 11. Noes 4.) (May 7). committee-passage, committee-passage-favorable
• 2025-05-08 Read second time. Ordered to third reading. reading-1, reading-2
• 2025-06-04 Read third time. Passed. Ordered to the Senate. (Ayes 50. Noes 20. Page 2074.) passage, reading-1, reading-3
• 2025-06-05 In Senate. Read first time. To Com. on RLS. for assignment. reading-1
• 2025-06-18 Referred to Coms. on N.R. & W. and JUD. referral-committee
• 2025-06-26 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
• 2025-07-09 From committee: Do pass and re-refer to Com. on JUD. (Ayes 5. Noes 2.) (July 8). Re-referred to Com. on JUD. committee-passage, committee-passage-favorable, referral-committee
• 2025-07-16 From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 11. Noes 2.) (July 15). amendment-introduction, amendment-passage, committee-passage, referral-committee
• 2025-07-17 Read second time and amended. Re-referred to Com. on APPR. amendment-passage, reading-1, reading-2, referral-committee
• 2025-08-13 In committee: Hearing postponed by committee.
• 2025-08-25 From committee: Be ordered to second reading pursuant to Senate Rule 28.8. committee-passage, reading-2
• 2025-08-26 Read second time. Ordered to third reading. reading-1, reading-2
• 2025-09-04 Read third time and amended. Ordered to second reading. amendment-passage, reading-1, reading-3
• 2025-09-08 Read second time. Ordered to third reading. reading-1, reading-2
• 2025-09-10 Read third time. Passed. Ordered to the Assembly. (Ayes 35. Noes 5. Page 2823.). passage, reading-1, reading-3
• 2025-09-10 In Assembly. Concurrence in Senate amendments pending.
• 2025-09-11 Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 69. Noes 1. Page 3331.). amendment-passage, committee-passage-favorable
• 2025-09-23 Enrolled and presented to the Governor at 4 p.m.
• 2025-10-11 Approved by the Governor. executive-signature
• 2025-10-11 Chaptered by Secretary of State - Chapter 643, Statutes of 2025. became-law

Source

OpenStates / OpenCivicData bulk snapshot 2026-07-01; origin ocd-bill/3d91e1a1-d18b-4740-b769-325399807944. Confidence: reported (aggregated from official California legislature records).