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HB1728HIPassed 2026 Regular Session

Relating To Rainwater Catchment Systems.

Last status update Jul 9, 2026

What this measure contains

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)

Source summary of the imported measure. Amendments can change the wording; read a specific version for its complete provisions.

Read the latest imported text

Read the full bill at its source ↗
Source: legiscan· Loaded Oct 30, 2026· Snapshot export date not suppliedOriginal record ↗

Bill text and versions

Drafts can change as a measure moves through the Legislature. Check the version attached to a recorded vote.

How this measure moved

Legislative path

Each stage below is a recorded decision from the official measure history, attached to the draft it considered. A member's row follows their votes from the first draft to the latest, and a highlighted vote marks where it changed. Committee and conference votes list every member by name. Floor votes list only exceptions; members serving that day who aren't named are shown as ayes in a dashed outline.

  1. Introduced
  2. HD1by WAL
  3. SD1by EIG
  4. CD1by Conference

Decision stages

  1. House WAL committee on the introduced draft: Passed, with amendments, reported as HD1

    7 aye · 2 aye with reservations · 0 no · 0 excused

  2. House second reading on HD1: Passed

    50 aye · 0 no · 1 excused

  3. House JHA committee on HD1: Passed, unamended

    8 aye · 0 no · 2 excused

  4. House third reading on HD1: Passed

    49 aye · 1 aye with reservations · 0 no · 0 excused

  5. Water, Land, and Agriculture (WLA) on HD1: Passed, with amendments, reported as SD1

    4 aye · 0 no · 1 excused · Source roll call

  6. Energy and Intergovernmental Affairs (EIG) on HD1: Passed, with amendments, reported as SD1

    5 aye · 0 no · 0 excused · Source roll call

  7. Judiciary (JDC) on SD1: Passed, unamended

    4 aye · 0 no · 1 excused · Source roll call

  8. Senate third reading on SD1: Passed

    25 aye · 0 no · 0 excused

  9. Senate conference managers on SD1: Passed, with amendments, reported as CD1

    3 aye · 0 no · 1 excused · Source roll call

  10. House conference managers on SD1: Passed, with amendments, reported as CD1

    3 aye · 0 no · 0 excused · Source roll call

  11. Senate final reading on CD1: Passed

    25 aye · 0 no · 0 excused

  12. House final reading on CD1: Passed

    51 aye · 0 no · 0 excused

Senate members along the path

Senate members' votes at each stage of HB1728
MemberWLA
HD1		EIG
HD1		JDC
SD1		Third reading
SD1		Conference
SD1		Final reading
CD1		Change along the path
Brenton AwaSD-023ExcusedAyeAye
Stanley ChangSD-009AyeAyeAyeAyeAye
Lynn DecoiteSD-007AyeAyeAye
Samantha DeCorteSD-022AyeAyeAye
Kurt FevellaSD-020AyeAyeAyeAye
Mike GabbardSD-021AyeAyeAye
Lorraine InouyeSD-001ExcusedAyeAye
Rachele Fernandez LamosaoSD-019AyeAyeAye
Chris LeeSD-025AyeAyeExcusedAye
Karl RhoadsSD-013AyeAyeAye
Tim RichardsSD-004AyeAyeAye
Joy San BuenaventuraSD-002AyeAyeAyeAye
Glenn WakaiSD-015AyeAyeAyeAye
12 more Senate members only counted as floor ayes
MemberWLA
HD1		EIG
HD1		JDC
SD1		Third reading
SD1		Conference
SD1		Final reading
CD1		Change along the path
Donovan CruzSD-017AyeAye
Brandon ElefanteSD-016AyeAye
Carol FukunagaSD-011AyeAye
Troy HashimotoSD-005AyeAye
Les IharaSD-010AyeAye
Dru KanuhaSD-003AyeAye
Jarrett KeohokaloleSD-024AyeAye
Michelle KidaniSD-018AyeAye
Donna KimSD-014AyeAye
Ronald KouchiSD-008AyeAye
Angus McKelveySD-006AyeAye
Sharon MoriwakiSD-012AyeAye

House members along the path

House members' votes at each stage of HB1728
MemberWAL
Introduced		Second reading
HD1		JHA
HD1		Third reading
HD1		Conference
SD1		Final reading
CD1		Change along the path
Della au BelattiHD-026AyeAyeExcusedAyeAye
Elle CochranHD-014AyeExcusedAyeAye
Diamond GarciaHD-042AyeAyeAyeAye
Mark HashemHD-019AyeAyeAyeAyeAyeAye
Daniel HoltHD-028Excused
Linda IchiyamaHD-031AyeAyeAyeAye
Kim IwamotoHD-025Aye*AyeAye*AyeDropped reservations at House second reading (HD1)Added reservations at House third reading (HD1)Dropped reservations at House final reading (CD1)
Kirstin KahaloaHD-006AyeAyeAyeAye
Daynette MorikawaHD-017AyeAyeAyeAye
Mahina PoepoeHD-013AyeAyeAyeAyeAye
Jackson SayamaHD-021AyeAyeAyeAye
Garner ShimizuHD-032Aye*AyeAyeAyeAyeDropped reservations at House second reading (HD1)
Kanani SouzaHD-043AyeAyeAyeAyeAye
Gregg TakayamaHD-034AyeAyeAyeAye
David TarnasHD-008AyeAyeAyeAyeAye
Justin WoodsonHD-009AyeAyeAyeAye
36 more House members only counted as floor ayes
MemberWAL
Introduced		Second reading
HD1		JHA
HD1		Third reading
HD1		Conference
SD1		Final reading
CD1		Change along the path
David AlcosHD-041AyeAyeAye
Terez AmatoHD-011AyeAyeAye
Cory ChunHD-035AyeAyeAye
Luke EvslinHD-016AyeAyeAye
Andrew GarrettHD-022AyeAyeAye
Joe GedeonHD-018AyeAyeAye
Tina GrandinettiHD-020AyeAyeAye
Daisy HartsfieldHD-036AyeAyeAye
Ikaika HusseyHD-029AyeAyeAye
Greggor IlaganHD-004AyeAyeAye
Jeanne KapelaHD-005AyeAyeAye
Sue Keohokapu-Lee LoyHD-002AyeAyeAye
Darius KilaHD-044AyeAyeAye
Lisa KitagawaHD-048AyeAyeAye
Sam KongHD-033AyeAyeAye
Matthias KuschHD-001AyeAyeAye
Trish La ChicaHD-037AyeAyeAye
Mike LeeHD-050AyeAyeAye
Nicole LowenHD-007AyeAyeAye
Lisa MartenHD-051AyeAyeAye
Scot MatayoshiHD-049AyeAyeAye
Lauren MatsumotoHD-038AyeAyeAye
Tyson MiyakeHD-010AyeAyeAye
Chris MuraokaHD-045AyeAyeAye
Nadine NakamuraHD-015AyeAyeAye
Ikaika OldsHD-023AyeAyeAye
Amy PerrusoHD-046AyeAyeAye
Elijah PierickHD-039AyeAyeAye
Sean QuinlanHD-047AyeAyeAye
Michael RatcliffeHD-028Aye
Julie Reyes OdaHD-040AyeAyeAye
Jenna TakenouchiHD-027AyeAyeAye
Adrian TamHD-024AyeAyeAye
Shirley Ann TemploHD-030AyeAyeAye
Chris ToddHD-003AyeAyeAye
Kyle YamashitaHD-012AyeAyeAye

Aye named · Aye* with reservations · Aye floor vote, not named as an exception · No · Excused · Changed reversed from the previous vote

Names are matched to legislators only when exactly one person fits; every printed name on this measure was matched. A missing vote means no record was found for that member at that stage, not a no vote. Committee codes follow the Legislature's abbreviations.Official measure history ↗

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Legislative history

  1. Prefiled.

  2. Introduced and Pass First Reading.

  3. Referred to WAL, JHA, referral sheet 1

  4. Bill scheduled to be heard by WAL on Tuesday, 02-03-26 9:00AM in House conference room 411 VIA VIDEOCONFERENCE.

  5. The committee on WAL recommend that the measure be PASSED, WITH AMENDMENTS. The votes were as follows: 9 Ayes: Representative(s) Hashem, Morikawa, Belatti, Ichiyama, Poepoe, Woodson, Souza; Ayes with reservations: Representative(s) Iwamoto, Shimizu; Noes: none; and Excused: none.

  6. Reported from WAL (Stand. Com. Rep. No. 200-26) as amended in HD 1, recommending passage on Second Reading and referral to JHA.

  7. Passed Second Reading as amended in HD 1 and referred to the committee(s) on JHA with none voting aye with reservations; none voting no (0) and Representative(s) Holt excused (1).

  8. Bill scheduled to be heard by JHA on Wednesday, 03-04-26 2:00PM in House conference room 325 VIA VIDEOCONFERENCE.

  9. The committee on JHA recommend that the measure be PASSED, UNAMENDED. The votes were as follows: 8 Ayes: Representative(s) Tarnas, Poepoe, Hashem, Kahaloa, Sayama, Takayama, Garcia, Shimizu; Ayes with reservations: none; Noes: none; and 2 Excused: Representative(s) Belatti, Cochran.

  10. Reported from JHA (Stand. Com. Rep. No. 1184-26), recommending passage on Third Reading.

  11. Passed Third Reading with Representative(s) Iwamoto voting aye with reservations; none voting no (0) and none excused (0). Transmitted to Senate.

  12. Received from House (Hse. Com. No. 273).

  13. Passed First Reading.

  14. Referred to EIG/WLA, JDC.

  15. The committee(s) on EIG/WLA has scheduled a public hearing on 03-19-26 3:00PM; Conference Room 224 & Videoconference.

  16. The committee(s) on WLA recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in WLA were as follows: 4 Aye(s): Senator(s) Lee, C., Chang, Lamosao, DeCorte; Aye(s) with reservations: none ; 0 No(es): none; and 1 Excused: Senator(s) Inouye.

  17. The committee(s) on EIG recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in EIG were as follows: 5 Aye(s): Senator(s) Wakai, Chang, DeCoite, Richards, Fevella; Aye(s) with reservations: none ; 0 No(es): none; and 0 Excused: none.

  18. Reported from EIG/WLA (Stand. Com. Rep. No. 3258) with recommendation of passage on Second Reading, as amended (SD 1) and referral to JDC.

  19. Report adopted; Passed Second Reading, as amended (SD 1) and referred to JDC.

  20. The committee(s) on JDC will hold a public decision making on 04-07-26 10:15AM; Conference Room 016 & Videoconference.

  21. The committee(s) on JDC recommend(s) that the measure be PASSED, UNAMENDED. The votes in JDC were as follows: 4 Aye(s): Senator(s) Rhoads, Gabbard, Chang, San Buenaventura; Aye(s) with reservations: none ; 0 No(es): none; and 1 Excused: Senator(s) Awa.

  22. Reported from JDC (Stand. Com. Rep. No. 3748) with recommendation of passage on Third Reading.

  23. One Day Notice 04-14-26.

  24. Report adopted; Passed Third Reading. Ayes, 25; Aye(s) with reservations: none . Noes, 0 (none). Excused, 0 (none). Transmitted to House.

  25. Returned from Senate (Sen. Com. No. 614) in amended form (SD 1).

  26. House disagrees with Senate amendment (s).

  27. Received notice of disagreement (Hse. Com. No. 780).

  28. House Conferees Appointed: Hashem, Tarnas Co-Chairs; Souza.

  29. Received notice of appointment of House conferees (Hse. Com. No. 786).

  30. Senate Conferees Appointed: Wakai Chair; Lee, C., San Buenaventura Co-Chairs; Fevella.

  31. Received notice of Senate conferees (Sen. Com. No. 713).

  32. Conference committee meeting scheduled for 04-29-26 10:50AM; Conference Room 325.

  33. The Conference committee recommends that the measure be PASSED, WITH AMENDMENTS. The votes of the Senate Conference Managers were as follows: 3 Aye(s): Senator(s) Wakai, San Buenaventura, Fevella; Aye(s) with reservations: none ; 0 No(es): none; and 1 Excused: Senator(s) Lee, C..

  34. The Conference Committee recommends that the measure be Passed, with Amendments. The votes were as follows: 3 Ayes: Representative(s) Hashem, Tarnas, Souza; Ayes with reservations: none; 0 Noes: none; and 0 Excused: none.

  35. Reported from Conference Committee (Conf Com. Rep. No. 84-26) as amended in (CD 1).

  36. Forty-eight (48) hours notice Wednesday 05-06-26.

  37. Reported from Conference Committee as amended CD 1 (Conf. Com. Rep. No. 84-26).

  38. 48 Hrs. Notice (as amended CD 1) 05-06-26

  39. Passed Final Reading, as amended (CD 1). Ayes, 25; Aye(s) with reservations: none . 0 No(es): none. 0 Excused: none.

  40. Passed Final Reading as amended in CD 1 with none voting aye with reservations; none voting no (0) and none excused (0).

  41. Received notice of Final Reading (Sen. Com. No. 816).

  42. Received notice of passage on Final Reading in House (Hse. Com. No. 888).

  43. Transmitted to Governor.

  44. Act 209, 07/08/2026 (Gov. Msg. No. 1311).

  45. Act 209, on 07/08/2026 (Gov. Msg. No. 1311).

Bill sponsors