SB 520 Hawaii Senate · 2026 Regular Session

RELATING TO WASTEWATER SYSTEMS.

Summary

Requires the Department of Health to amend its administrative rules to: (1) Authorize not more than five dwellings and dwelling units connected to a single individual wastewater system; and (2) Provide that not more than five bedrooms may be connected to a single individual wastewater system. (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

Maddy AI version diff · 1 comparison

What changed between versions

SB520 → SB520_SD1 · 3 edits

MINOR

The bill was updated from a House version to a Senate version, changing the bill type and metadata to reflect the Senate's review. The core policy language was modified to clarify that wastewater systems can serve up to five dwellings or dwelling units, with a specific cap of five total bedrooms, replacing the previous language that focused on 'dwelling units' and 'tiny homes'.

Scope change

The bill's scope was clarified to explicitly count 'dwellings' and 'bedrooms' rather than just 'dwelling units' and 'tiny homes', broadening the definition of what can be connected to a single system.

REQUIREMENT

The limit on individual wastewater systems was changed from a maximum of five dwelling units or tiny homes to a maximum of five dwellings or dwelling units, with a specific cap of five total bedrooms.

The bill description was updated to reflect the new bedroom-based limit instead of the previous tiny home authorization.

TECHNICAL

Metadata fields were updated to reflect the Senate version (SD1), including changes to the bill type, revision numbers, and timestamps.

Floor votes

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

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 HHS/AEN (Stand. Com. Rep. No. 576) with recommendation of passage on Second Reading, as amended (SD 1) and referral to WAM.

upper

Feb 7, 2025

Upper · Passed

The committee(s) on HHS recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in HHS were as follows: 4 Aye(s): Senator(s) San Buenaventura, Aquino, Hashimoto, Keohokalole; Aye(s) with reservations: none ; 0 No(es): none; and 1 Excused: Senator(s) Fevella.

upper

Feb 7, 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 4, 2025

Upper · Passed

The committee(s) on HHS/AEN has scheduled a public hearing on 02-07-25 2:00PM; Conference Room 225 & Videoconference.

upper

Jan 21, 2025

Committee

Referred to HHS/AEN, WAM.

upper

Jan 17, 2025

Introduced

Introduced.

upper

3 primary · 0 co-sponsors