HB 2638 Arizona House · 57th Legislature - First Regular Session

on-farm irrigation efficiency program; continuation

HB 2638 continues Arizona's on-farm irrigation efficiency pilot program, providing grants to farmers for installing water-saving irrigation systems that reduce groundwater, surface water, or Colorado River water use by at least 20% compared to flood irrigation. The program, administered by the University of Arizona Cooperative Extension, offers funding up to $1,500 per irrigable acre with strict requirements including verified water savings, three years of active farming history, and crop-specific eligibility. Recipients must use the new systems for three years, report water savings data, and cannot claim state tax credits for equipment paid with grant funds. The bill mandates annual reports tracking grant distribution, acres affected, technology types, and water conservation results to inform future water management decisions.
Bill status signed all 5 stages cleared
Introduction
Jan 2025
Committee Review
Mar 2025
House Passage
Jun 2025
Senate Passage
Apr 2025
Signed into Law
Jun 2025
Introduced Jan 27, 2025 Signed Jun 10, 2025
Maddy AI version diff · 3 comparisons

What changed between versions

Senate Engrossed Version Chaptered Version · 2 edits
MINOR
The bill was finalized into law (Chapter 219) after being passed as Senate Engrossed Version HB 2638. The primary substantive change involves reorganizing the reporting requirements for the University of Arizona Cooperative Extension, converting a numbered list into an alphabetized list to improve clarity. Additionally, the final version includes the official approval and filing dates, confirming the bill's enactment.
Scope change
The bill's scope remains focused on the on-farm irrigation efficiency pilot program, but the reporting structure was modified to group related data points under lettered sub-items for better readability.
REQUIREMENT

The reporting requirements for the annual aggregate report were restructured from a numbered list to an alphabetized list (items a through g) to organize data categories more clearly.

TIMELINE

The final text explicitly includes the official approval date (June 10, 2025) and the filing date with the Secretary of State, formalizing the bill's enactment.

Floor votes · Senate Apr 29, 2025 · House Feb 20, 2025

How they voted

280
Passed · 2 other
Total votes 30
Apr 29, 2025
D Democratic13
11 Yea 2
84% Yea
R Republican17
17 Yea
100% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
15
Key actions
7
Committee
2
Amendments
1
Jun 10, 2025
Signed into law
Signed by Governor
executive
Jun 4, 2025
Lower · Passed
PASSED
lower
Apr 29, 2025
Upper · Passed
PASSED
upper
Apr 23, 2025
Upper · Passed
DPA
upper
Mar 11, 2025
Upper · Passed
DP
upper
Feb 20, 2025
Lower · Passed
PASSED
lower
Feb 11, 2025
Lower · Passed
DP
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Gail Griffin
Gail Griffin
RRepublican
AZ
19