environment; 2026-2027
This bill establishes annual groundwater withdrawal fees for users in Arizona's Prescott, Santa Cruz, Tucson, Phoenix, and Pinal active management areas, with a maximum rate of $5 per acre-foot. The collected funds are allocated to cover administrative costs, water supply augmentation, conservation assistance, water banking, and the purchase of older water rights, while also exempting small-scale irrigation operations. Additionally, the legislation creates a dedicated fund to finance the construction and rehabilitation of wells and infrastructure for irrigation districts in specific regions.
Bill status
signed
all 5 stages cleared
Introduction
Jun 2026
Committee Review
Jun 2026
House Passage
Jun 2026
Senate Passage
Jun 2026
Signed into Law
Jun 2026
Introduced Jun 9, 2026
Signed Jun 13, 2026
Maddy AI version diff · 2 comparisons
What changed between versions
House Engrossed Version (06/11/2026)
→
Chaptered Version
·
3 edits
MINOR
The bill was formally enacted into law after being approved by the Governor and filed with the Secretary of State. The primary substantive change is the establishment of a $15,000,000 cap on the water quality assurance revolving fund for the 2026-2027 fiscal year. The document also includes standard formatting updates, such as changing the title from 'House Bill' to 'Chapter' and removing blank lines.
Scope change
The bill's scope regarding funding limits was finalized by setting a specific dollar cap for the upcoming fiscal year.
FISCAL
Established a maximum limit of $15,000,000 for the water quality assurance revolving fund for fiscal year 2026-2027.
TIMELINE
Added the official approval date of June 13, 2026, and the filing date with the Secretary of State.
TECHNICAL
Updated the document header to reflect the bill's status as 'Chapter 131' instead of 'House Bill 4159'.
Floor votes · Senate Jun 11, 2026 · House Jun 11, 2026
How they voted
23–5
Passed · 2 other
Total votes 30
Jun 11, 2026
D
Democratic13
53% Yea
R
Republican17
94% Yea
Vote distribution
All Yea
All Nay
Mixed
No data
Full legislative history
Actions timeline
Total actions
10
Key actions
4
Committee
1
Jun 13, 2026
Signed into law
Signed by Governor
executive
Jun 11, 2026
Lower · Passed
PASSED
lower
Jun 11, 2026
Lower · Passed
DP
lower
Jun 10, 2026
Lower · Passed
DP
lower
1 primary · 4 co-sponsors
Sponsors
Ask Maddy
·
AI policy assistant
Ask Maddy about HB 4159
Scope: AZ
Hi! I can help you understand HB 4159. What would you like to know?
Try one of these
i
Maddy answers using official bill text and legislative records. Always verify before sharing.
Sources cited inline