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HB510HIEngrossed 2026 Regular Session

Relating To Declaration Of Water Shortage And Emergency.

Last status update Mar 4, 2025

What this measure contains

Amends the conditions, manner, and areas in which the Commission on Water Resource Management can declare and provide notice of water shortages and emergencies. Limits the duration of a water shortage declaration to ninety days. Limits water usage restrictions imposed on a permittee or owner and operator to twenty per cent of the permittee's or owner and operator's last reported monthly use. Requires CWRM to maintain a list of names and postal or email addresses of persons who request notification of a water shortage declaration and send them a copy of a notice of a water shortage declaration whenever water shortage is declared. Effective 7/1/2040. (SD2)

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

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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.

Related measures

  • SB145— Same As
  • HB510— Carry Over

Related measures may contain different language or follow different histories.

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 WTL
  4. SD2by JDC

Companion measures: SB145, HB510. A companion follows its own path; its votes are not combined with this one.

Decision stages

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

    7 aye · 2 aye with reservations · 0 no · 1 excused

  2. House second reading on HD1: Passed

    48 aye · 1 aye with reservations · 0 no · 2 excused

  3. House JHA committee on HD1: Passed, unamended

    8 aye · 1 aye with reservations · 1 no · 1 excused

  4. House third reading on HD1: Passed

    44 aye · 1 aye with reservations · 4 no · 2 excused

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

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

  6. Judiciary (JDC) on SD1: Passed, with amendments, reported as SD2

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

  7. Senate third reading on SD2: Passed

    23 aye · 2 no · 0 excused

Senate members along the path

Senate members' votes at each stage of HB510
MemberWTL
HD1		JDC
SD1		Third reading
SD2		Change along the path
Brenton AwaSD-023AyeNoAye → No at Senate third reading (SD2)
Samantha DeCorteSD-022AyeNoAye → No at Senate third reading (SD2)
Stanley ChangSD-009AyeAyeAye
Brandon ElefanteSD-016AyeAye
Mike GabbardSD-021AyeAye
Lorraine InouyeSD-001AyeAye
Angus McKelveySD-006ExcusedAye
Karl RhoadsSD-013AyeAye
Joy San BuenaventuraSD-002ExcusedAye
16 more Senate members only counted as floor ayes
MemberWTL
HD1		JDC
SD1		Third reading
SD2		Change along the path
Henry AquinoSD-019Aye
Donovan CruzSD-017Aye
Lynn DecoiteSD-007Aye
Kurt FevellaSD-020Aye
Carol FukunagaSD-011Aye
Troy HashimotoSD-005Aye
Les IharaSD-010Aye
Dru KanuhaSD-003Aye
Jarrett KeohokaloleSD-024Aye
Michelle KidaniSD-018Aye
Donna KimSD-014Aye
Ronald KouchiSD-008Aye
Chris LeeSD-025Aye
Sharon MoriwakiSD-012Aye
Tim RichardsSD-004Aye
Glenn WakaiSD-015Aye

House members along the path

House members' votes at each stage of HB510
MemberWAL
Introduced		Second reading
HD1		JHA
HD1		Third reading
HD1		Change along the path
David AlcosHD-041AyeNoAye → No at House third reading (HD1)
Diamond GarciaHD-042Aye*NoNoAye with reservations → No at House JHA committee (HD1)
Sam KongHD-033AyeNoAye → No at House third reading (HD1)
Chris MuraokaHD-045AyeNoAye → No at House third reading (HD1)
Della au BelattiHD-026AyeAyeAyeAye
Elle CochranHD-014ExcusedExcusedAye
Mark HashemHD-019AyeAyeAyeAye
Linda IchiyamaHD-031ExcusedAyeAye
Kim IwamotoHD-025AyeAyeAye
Kirstin KahaloaHD-006AyeAyeAye
Rachele Fernandez LamosaoSD-019AyeAyeAye
Daynette MorikawaHD-017Aye*AyeAyeDropped reservations at House second reading (HD1)
Amy PerrusoHD-046AyeAyeAye
Elijah PierickHD-039AyeExcused
Mahina PoepoeHD-013AyeAyeAyeAye
Garner ShimizuHD-032Aye*AyeAye*Aye*Dropped reservations at House second reading (HD1)Added reservations at House JHA committee (HD1)
Kanani SouzaHD-043AyeAyeAye
Gregg TakayamaHD-034AyeAyeAye
David TarnasHD-008AyeAyeAye
Chris ToddHD-003AyeAyeAye
Gene WardHD-018ExcusedExcused
Justin WoodsonHD-009AyeAyeAye
29 more House members only counted as floor ayes
MemberWAL
Introduced		Second reading
HD1		JHA
HD1		Third reading
HD1		Change along the path
Terez AmatoHD-011AyeAye
Cory ChunHD-035AyeAye
Luke EvslinHD-016AyeAye
Andrew GarrettHD-022AyeAye
Tina GrandinettiHD-020AyeAye
Daniel HoltHD-028AyeAye
Ikaika HusseyHD-029AyeAye
Greggor IlaganHD-004AyeAye
Jeanne KapelaHD-005AyeAye
Sue Keohokapu-Lee LoyHD-002AyeAye
Darius KilaHD-044AyeAye
Lisa KitagawaHD-048AyeAye
Matthias KuschHD-001AyeAye
Trish La ChicaHD-037AyeAye
Mike LeeHD-050AyeAye
Nicole LowenHD-007AyeAye
Lisa MartenHD-051AyeAye
Scot MatayoshiHD-049AyeAye
Lauren MatsumotoHD-038AyeAye
Tyson MiyakeHD-010AyeAye
Nadine NakamuraHD-015AyeAye
Ikaika OldsHD-023AyeAye
Sean QuinlanHD-047AyeAye
Julie Reyes OdaHD-040AyeAye
Jackson SayamaHD-021AyeAye
Jenna TakenouchiHD-027AyeAye
Adrian TamHD-024AyeAye
Shirley Ann TemploHD-030AyeAye
Kyle YamashitaHD-012AyeAye

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. Pending introduction.

  2. Introduced and Pass First Reading.

  3. Referred to WAL, JHA, referral sheet 2

  4. Bill scheduled to be heard by WAL on Thursday, 02-06-25 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, Lamosao, Belatti, Iwamoto, Poepoe, Woodson, Souza; Ayes with reservations: Representative(s) Morikawa, Shimizu; Noes: none; and 1 Excused: Representative(s) Ichiyama.

  6. Reported from WAL (Stand. Com. Rep. No. 362) 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 Representative(s) Garcia voting aye with reservations; none voting no (0) and Representative(s) Cochran, Ward excused (2).

  8. Bill scheduled to be heard by JHA on Thursday, 02-27-25 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: 9 Ayes: Representative(s) Tarnas, Poepoe, Belatti, Hashem, Kahaloa, Perruso, Takayama, Todd; Ayes with reservations: Representative(s) Shimizu; 1 Noes: Representative(s) Garcia; and 1 Excused: Representative(s) Cochran.

  10. Reported from JHA (Stand. Com. Rep. No. 1085), recommending passage on Third Reading.

  11. Passed Third Reading with Representative(s) Shimizu voting aye with reservations; Representative(s) Alcos, Garcia, Kong, Muraoka voting no (4) and Representative(s) Pierick, Ward excused (2). Transmitted to Senate.

  12. Received from House (Hse. Com. No. 250).

  13. Passed First Reading.

  14. Referred to WTL, JDC.

  15. The committee(s) on WTL has scheduled a public hearing on 03-14-25 1:00PM; Conference Room 229 & Videoconference.

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

  17. Reported from WTL (Stand. Com. Rep. No. 1214) with recommendation of passage on Second Reading, as amended (SD 1) and referral to JDC.

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

  19. The committee(s) on JDC will hold a public decision making on 03-25-25 10:01AM; Conference Room 016 & Videoconference.

  20. The committee(s) on JDC will hold a public decision making on 03-27-25 10:40AM; Conference Room 016 & Videoconference.

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

  22. Reported from JDC (Stand. Com. Rep. No. 1718) with recommendation of passage on Third Reading, as amended (SD 2).

  23. 48 Hrs. Notice 04-08-25.

  24. Report Adopted; Passed Third Reading, as amended (SD 2). Ayes, 23; Aye(s) with reservations: none. Noes, 2 (Senator(s) Awa, DeCorte). Excused, 0 (none). Transmitted to House.

  25. Returned from Senate (Sen. Com. No. 651) in amended form (SD 2).

  26. House disagrees with Senate amendment (s).

  27. Received notice of disagreement (Hse. Com. No. 704).

  28. House Conferees Appointed: Hashem, Tarnas Co-Chairs; Ichiyama, Lamosao, Shimizu.

  29. Received notice of appointment of House conferees (Hse. Com. No. 732).

  30. Carried over to 2026 Regular Session.

  31. House Conferee(s) discharged.

  32. Received notice of the discharge of all House Conferees (Hse. Com. No. 457).

  33. Re-Referred to WLA, JDC.

Bill sponsors