republic-os/legislation/us/states/ca/20092010/ab-2409.md

---
type: "Bill"
title: "Urban water suppliers: water shortage contingency analysis."
description: "Existing law, the Urban Water Management Planning Act, requires an urban water supplier, as defined, to prepare and adopt an urban water management plan for submission to the Department of Water Resources and other entities, in accordance with prescribed requirements. The act requires each urban water supplier to update its urban water management plan at least once every 5 years on or before December 31, in years ending in 5 and zero. The act requires an urban water management plan to include, among other things, an urban water shortage contingency analysis. The urban water shortage contingency analysis is required to include various elements relating to water supply availability during water shortages and interruptions."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20092010"
identifier: "AB 2409"
citation: "California AB 2409 (20092010)"
classification: ["bill"]
subjects: ["Urban water suppliers: water shortage contingency analysis."]
status: "enacted"
primary_sponsors: ["Nestande"]
version_count: 6
action_count: 20
vote_count: 5
first_action: "2010-02-19"
last_action: "2010-07-06"
source: "openstates"
source_identifier: "ocd-bill/905e9e05-d0f1-45fd-8bb2-9417a40699f3"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200920100AB2409"
source_hash: "b2becebee95a5cef558f96d9b3e49c5f582346bd6809a2e874aeaa3db1f51740"
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 2409 (20092010) — Urban water suppliers: water shortage contingency analysis.

Existing law, the Urban Water Management Planning Act, requires an urban water supplier, as defined, to prepare and adopt an urban water management plan for submission to the Department of Water Resources and other entities, in accordance with prescribed requirements. The act requires each urban water supplier to update its urban water management plan at least once every 5 years on or before December 31, in years ending in 5 and zero. The act requires an urban water management plan to include, among other things, an urban water shortage contingency analysis. The urban water shortage contingency analysis is required to include various elements relating to water supply availability during water shortages and interruptions.

## Version chain

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

1. **02/19/10 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2409&version=20090AB240999INT)
2. **04/06/10 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2409&version=20090AB240998AMD)
3. **06/15/10 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2409&version=20090AB240997AMD)
4. **07/06/10 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2409&version=20090AB240995CHP)
5. **AB2409** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200920100AB2409)
6. **06/22/10 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2409&version=20090AB240996ENR)

## Votes

- Consent Calendar 2nd AB2409 Nestande — **pass** (pass) · upper
- Do pass, to Consent Calendar. — **pass** (pass) · lower
- AB 2409 NESTANDE Concurrence in Senate Amendments — **pass** (pass) · lower
- Do pass as amended. To Consent Calendar. — **pass** (pass) · upper
- AB 2409 NESTANDE Consent Calendar Second Day Regular Session — **pass** (pass) · lower

## Sponsors

- Nestande — primary (person)
- Hill — principal coauthor (person)

## Timeline

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

- **2010-02-19** Introduced. To print. `introduction`
- **2010-02-21** From printer. May be heard in committee March 23.
- **2010-02-22** Read first time. `reading-1`
- **2010-03-11** Referred to Coms. on W.,P. & W. and L. GOV. `referral-committee`
- **2010-03-15** In committee: Set, first hearing. Hearing canceled at the request of author.
- **2010-04-06** From committee chair, with author's amendments: Amend, and re-refer to Com. on W.,P. & W. Read second time and amended. `amendment-introduction, reading-2, amendment-passage, reading-1`
- **2010-04-07** Re-referred to Com. on W.,P. & W. `referral-committee`
- **2010-04-14** From committee: Do pass. To Consent Calendar. (April 13). `committee-passage-favorable, committee-passage`
- **2010-04-15** Read second time. To Consent Calendar. `reading-2, reading-1`
- **2010-04-22** Read third time, passed, and to Senate. (Ayes 74. Noes 0. Page 4819.) `reading-3, passage, reading-1`
- **2010-04-22** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2010-05-06** Referred to Com. on N.R. & W. `referral-committee`
- **2010-06-14** From committee: Amend, and do pass as amended. To Consent Calendar. (June 9). `amendment-introduction, amendment-passage, committee-passage`
- **2010-06-15** Read second time and amended. Ordered to Consent Calendar. `amendment-passage, reading-2, reading-1`
- **2010-06-17** Read third time, passed, and to Assembly. (Ayes 33. Noes 0. Page 3946.) `reading-3, passage, reading-1`
- **2010-06-17** In Assembly. Concurrence in Senate amendments pending. May be considered on or after June 19 pursuant to Assembly Rule 77.
- **2010-06-21** Senate amendments concurred in. To enrollment. (Ayes 76. Noes 0. Page 5735.) `amendment-passage, committee-passage-favorable`
- **2010-06-23** Enrolled and to the Governor at 2:30 p.m.
- **2010-07-06** Approved by the Governor. `executive-signature`
- **2010-07-06** Chaptered by Secretary of State - Chapter 42, Statutes of 2010.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/905e9e05-d0f1-45fd-8bb2-9417a40699f3`. Confidence: reported (aggregated from official California legislature records).