SB 547 Hawaii Senate · 2026 Regular Session

RELATING TO WATER CONSERVATION.

Summary
Incentivizes the installation and use of gray water recycling systems and atmospheric water generators in the State by establishing an income tax credit to be administered by the Department of Taxation. Requires the Department of Business, Economic Development, and Tourism to establish a rebate program. Requires the State Building Code Council to adopt certain standards on gray water recycling systems and atmospheric water generators in the State. Effective 7/1/2050. (SD1)
Bill status passed 3 of 5 stages cleared
Introduction
Jan 2025
Committee Review
Feb 2025
Senate Passage
Feb 2025
House Passage
Governor
Introduced Jan 17, 2025 Last action Dec 8, 2025
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What changed between versions

SB547 SB547_SD1 · 8 edits
MODERATE
This bill updates the tax credit and rebate program for water conservation systems, such as gray water recycling and atmospheric water generators. The changes include extending the program's start date to 2050, adjusting credit and rebate amounts based on property type, and adding specific rules for partnerships, low-income homeowners, and filing deadlines.
Scope change
The bill's effective date was significantly delayed from July 1, 2025, to July 1, 2050, and the program now explicitly includes partnerships, S corporations, estates, and trusts.
TIMELINE

The effective date of the Act was changed from July 1, 2025, to July 1, 2050, delaying when the tax credits and rebates begin.

ELIGIBILITY

Eligibility for tax credits was expanded to include partnerships, S corporations, estates, and trusts, with credits determined at the entity level before distribution.

A new specific provision was added for low-income homeowners, defining them more strictly as owners residing at the property with income at or below 80% of the area median income.

FISCAL

Tax credit and rebate amounts were adjusted; for example, the residential tax credit remains $10,000 or 25% of cost, while the commercial tax credit is now $50,000 or 20% of cost.

REQUIREMENT

The deadline for claiming the tax credit was updated to the twelfth month following the year the water system is placed in service, rather than the end of the taxable year.

A new limit was added preventing the tax credit from being carried forward for more than five years after the initial claim.

DEFINITION

New definitions were added for 'Area median income' and 'NSF/ANSI 350-certified gray water recycling system effluent' to clarify program rules.

TECHNICAL

Several definitions were updated to use 'American National Standards Institute' instead of 'American National Standard' and to specify that atmospheric water generators must be fully NSF P343-certified starting in 2028.

Floor votes

How they voted

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

Actions timeline

Total actions
12
Key actions
5
Committee
6
Feb 14, 2025
Upper · Passed
Report adopted; Passed Second Reading, as amended (SD 1) and referred to WAM.
upper
Feb 14, 2025
Committee
Reported from AEN/PSM/EDT (Stand. Com. Rep. No. 635) with recommendation of passage on Second Reading, as amended (SD 1) and referral to WAM.
upper
Feb 12, 2025
Upper · Passed
The committee(s) on EDT recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in EDT were as follows: 3 Aye(s): Senator(s) DeCoite, Wakai, Awa; Aye(s) with reservations: none ; 0 No(es): none; and 2 Excused: Senator(s) Fukunaga, Kim.
upper
Feb 12, 2025
Upper · Passed
The committee(s) on PSM recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in PSM were as follows: 4 Aye(s): Senator(s) Elefante, Wakai, Rhoads, DeCorte; Aye(s) with reservations: none ; 0 No(es): none; and 1 Excused: Senator(s) Fukunaga.
upper
Feb 12, 2025
Upper · Passed
The committee(s) on AEN recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in AEN were as follows: 5 Aye(s): Senator(s) Gabbard, Richards, DeCoite, Rhoads, Awa; Aye(s) with reservations: none ; 0 No(es): none; and 0 Excused: none.
upper
Feb 7, 2025
Upper · Passed
The committee(s) on AEN/PSM/EDT has scheduled a public hearing on 02-10-25 1:00PM; Conference Room 224 & Videoconference.
upper
Jan 21, 2025
Committee
Referred to AEN/PSM/EDT, WAM.
upper
Jan 17, 2025
Introduced
Introduced.
upper
6 primary · 1 co-sponsor

Sponsors