HB 2026 Arizona House · 57th Legislature - Second Regular Session

assured water supply; commingling

HB 2026 requires developers to obtain a "certificate of assured water supply" or a written commitment from a designated water provider before selling subdivided lands in Arizona's active management areas. It directly affects land developers and real estate sellers in these areas, mandating proof of water availability for new subdivisions. Key provisions include designating cities/towns with Central Arizona Project water contracts as automatically qualifying for "assured water supply" status, requiring the director to notify local officials of designations, and allowing gray water systems to reduce water demand requirements. The bill is currently pending (prefiled in 2025, first reading in 2026) and does not apply to mineral or industrial developments.

Issues: ✗ Housing

Bill status vetoed 4 of 5 stages cleared

Introduction

Dec 2025

Committee Review

Mar 2026

House Passage

Feb 2026

Senate Passage

Apr 2026

Vetoed

Apr 2026

Introduced Dec 2, 2025 Vetoed Apr 13, 2026

Maddy AI version diff · 1 comparison

What changed between versions

Introduced Version → House Engrossed Version (02/23/2026) · 5 edits · Apr 7, 2026

MODERATE

The bill was reorganized to include new provisions regarding successor liability for municipal water providers and expanded exemptions for existing subdivisions. It also updated the definition of 'assured water supply' to clarify that water can be considered available even if it is mixed with other sources, and added a requirement for a study on water certificates for large residential building permits.

Scope change

The bill's scope was expanded to include specific rules for municipal providers whose water supply designation lapses, ensuring they remain accountable for groundwater management goals. Additionally, the applicability of the certificate requirement was modified to exempt certain existing subdivisions under stricter conditions.

REQUIREMENT

Added new subsection I requiring municipal providers or their successors to continue complying with groundwater management goals even if their assured water supply designation lapses.

Added new subsection L mandating a study by December 31, 2023, on whether large residential building permit applicants should also require a water supply certificate.

DEFINITION

Modified subsection N to clarify that 'assured water supply' includes water that is commingled with other sources, provided the specific source dedicated to the use is adequate.

ELIGIBILITY

Added new subsection J creating a detailed exemption for subdividers who already hold a valid 'type A' certificate from a previous owner, provided the plat and water provider have not changed.

TECHNICAL

Corrected a formatting error in the definition of 'assured water supply' where the letter 'o' was mistakenly inserted before the letter 'N'.

Floor votes · House Feb 23, 2026

How they voted

This bill passed the Senate by voice vote (no roll call recorded).

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Apr 13, 2026

Vetoed

Vetoed by Governor

executive

Apr 7, 2026

Upper · Passed

PASSED

upper

Apr 7, 2026

Upper · Passed

upper

Mar 10, 2026

Upper · Passed

upper

Feb 23, 2026

Lower · Passed

PASSED

lower

Feb 10, 2026

Lower · Passed

lower

1 primary · 0 co-sponsors