Bills

HB 1728: Counties; Rainwater Catchment Systems

  • Session Year: 2025-2026
  • House: House
  • Latest Version Date: 2026-04-29

Current Status:

Passed

(2026-07-09: Act 209, on 07/08/2026 (Gov. Msg. No. 1311).)

Introduced

In Committee

First Chamber

In Committee

Second Chamber

Final Decking

Enacted

What does this bill do?

The bill requires county governments to allow rainwater catchment systems for drinking (potable) and non‑drinking uses on all properties, even if a property is on the county water system. Counties may require registration, inspection, or notification of these systems to protect public health or water quality but may not unreasonably restrict or ban them. A rainwater catchment system collects and stores rain from rooftops or surfaces for uses like irrigation, toilet flushing, cleaning, and, if treated, drinking.

The summary is provided by generative AI which can make mistakes. For original language, please view the details in the table below.

Version:

Requires the counties to allow for the installation and operation of rainwater catchment systems for potable and nonpotable uses on all properties.  Allows the counties to require registration, inspection, or notification of rainwater catchment systems.  (CD1)

Discussed in Hearing

Conference Committee 3MIN
Apr 29, 2026

Conference Committee

Senate Standing Committee on Housing 49SEC
Mar 19, 2026

Senate Standing Committee on Housing

Senate Standing Committee on Energy and Intergovernmental Affairs 49SEC
Mar 19, 2026

Senate Standing Committee on Energy and Intergovernmental Affairs

Senate Standing Committee on Water, Land, Culture and the Arts 49SEC
Mar 19, 2026

Senate Standing Committee on Water, Land, Culture and the Arts

Senate Standing Committee on Housing 1MIN
Mar 19, 2026

Senate Standing Committee on Housing

Senate Standing Committee on Energy and Intergovernmental Affairs 1MIN
Mar 19, 2026

Senate Standing Committee on Energy and Intergovernmental Affairs

Senate Standing Committee on Water, Land, Culture and the Arts 1MIN
Mar 19, 2026

Senate Standing Committee on Water, Land, Culture and the Arts

House Standing Committee on Judiciary & Hawaiian Affairs 1MIN
Mar 4, 2026

House Standing Committee on Judiciary & Hawaiian Affairs

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