SB 1221 Hawaii Senate · 2025 Regular Session

RELATING TO STORMWATER MANAGEMENT SYSTEMS.

Summary
Beginning 1/1/2027, requires the counties to adopt ordinances for the regulation of retention and detention ponds. Requires the counties to conduct a survey of existing retention and detention ponds and submit a report to the Legislature. (CD1)
Bill status signed all 5 stages cleared
Introduction
Jan 2025
Committee Review
Apr 2025
Senate Passage
Apr 2025
House Passage
Apr 2025
Signed into Law
Jul 2025
Introduced Jan 21, 2025 Signed Jul 3, 2025
Maddy AI version diff · 6 comparisons

What changed between versions

SB1221_SD1 SB1221_SD2 · 27 edits
MAJOR
This bill version (SD2) is a revised draft of a stormwater management safety law that was previously in SD1. The core policy changes remain consistent between versions, focusing on prohibiting new detention and retention ponds, establishing safety requirements, creating an inspection program, and requiring a statewide survey. The main differences are formatting, metadata, and minor text refinements rather than substantive policy changes.
Scope change
No substantive change in scope; the bill still applies statewide to all counties and covers both retention and detention ponds with the same core requirements.
TECHNICAL

Removed draft metadata, page headers, and formatting artifacts from the previous version.

Reorganized section numbering and structure for clarity, moving definitions to Chapter 340E-B and safety requirements to Chapter 340E-C.

DEFINITION

Simplified definitions section by removing the 'dry-retention system' alternative term and clarifying the distinction between detention and retention ponds.

REQUIREMENT

Consolidated safety requirements into a single section with clearer numbering and formatting.

Added explicit requirement for a maintenance plan including design drawings, operational records, and replacement timelines for pond structures.

Added requirement for emergency spillways to allow safe overflow when storage capacity is exceeded.

Added requirement for shelves or shallow areas around pond banks to allow people and animals to climb out of the water.

Added requirement for a landscaped buffer to discourage people and pets from entering the pond.

Added requirement for appropriate accumulated sediment levels in ponds.

Added requirement for proper gradual sloping that is not eroding and causing destabilization at embankments.

Added requirement for other requirements as determined by the department.

Added requirement for inspections to ensure proper vegetation management, trash removal, ground cover, sediment levels, fencing, signage, and ring buoys.

Added requirement for inspections to ensure proper gradual sloping that is not eroding and causing destabilization at embankments.

Added requirement for inspections to ensure the presence of shelves or shallow areas around the banks that allow people and animals to climb out of the water.

Added requirement for inspections to ensure design and building features that allow for regular maintenance, access for inspections, removal of debris, and vegetation management.

Added requirement for inspections to ensure a maintenance plan on file by the owners or operators of the retention pond or detention pond that includes design drawings and operational records and addresses vegetation management, bank erosion and stabilization, and removal of trash, debris, litter, and sediment.

Added requirement for inspections to ensure a maintenance plan addresses life expectancy and a replacement timeline for outlet and inlet structures, orifices, trash racks, and emergency spillways and complies with federal, state, and county requirements.

Added requirement for inspections to ensure other requirements as determined by the department.

Added requirement for the department to strive to inspect retention ponds and detention ponds before and after major rain events.

Added requirement for the department to adopt rules in accordance with chapter 91 to carry out the purposes of the chapter.

Added requirement for violations of the chapter to be subject to administrative fines as determined by the department in accordance with rules.

Added requirement for the department to conduct a survey of all existing retention and detention ponds statewide and submit a report of its findings and recommendations, including any proposed legislation, to the legislature no later than twenty days prior to the convening of the regular session of 2026.

Added requirement for the appropriation of funds to establish two full-time equivalent positions within the department of land and natural resources for the purposes of this Act.

Added requirement for the sums appropriated to be expended by the department of land and natural resources for the purposes of this Act.

Added requirement for the Act to take effect on May 13, 2040.

Added requirement for new statutory material to be underscored.

Added requirement for the report title and description to be included at the end of the document.

Floor votes

How they voted

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

Actions timeline

Total actions
51
Key actions
18
Committee
20
Amendments
2
Apr 30, 2025
Lower · Passed
Passed Final Reading as amended in CD 1 with none voting aye with reservations; none voting no (0) and Representative(s) Cochran, Pierick excused (2).
lower
Apr 30, 2025
Upper · Passed
Passed Final Reading, as amended (CD 1). Ayes, 25; Aye(s) with reservations: Senator(s) Ihara, McKelvey. Noes, 0 (none). Excused, 0 (none).
upper
Apr 25, 2025
Lower · Passed
Reported from Conference Committee (Conf Com. Rep. No. 126) as amended in (CD 1).
lower
Apr 25, 2025
Introduced
48 Hrs. Notice (as amended CD 1) 04-30-25.
upper
Apr 25, 2025
Upper · Passed
Reported from Conference Committee as amended CD 1 (Conf. Com. Rep. No. 126).
upper
Apr 25, 2025
Lower · Passed
The Conference Committee recommends that the measure be Passed, with Amendments. The votes were as follows: 3 Ayes: Representative(s) Hashem, Lamosao, Shimizu; Ayes with reservations: none; 0 Noes: none; and 1 Excused: Representative(s) Tarnas.
lower
Apr 25, 2025
Upper · Passed
The Conference committee recommends that the measure be PASSED, WITH AMENDMENTS. The votes of the Senate Conference Managers were as follows: 4 Aye(s): Senator(s) Wakai, Hashimoto, Kanuha, Fevella; Aye(s) with reservations: none ; 0 No(es): none; and 0 Excused: none.
upper
Apr 24, 2025
Lower · Passed
Conference Committee Meeting will reconvene on Friday 04-25-25 9:35AM in conference room 229.
lower
Apr 23, 2025
Lower · Passed
Bill scheduled for Conference Committee Meeting on Thursday, 04-24-25 9:45AM in conference room 229.
lower
Apr 10, 2025
Amended
Senate disagrees with House amendments.
upper
Apr 10, 2025
Introduced
Received from House (Hse. Com. No. 674).
upper
Apr 8, 2025
Lower · Passed
Passed Third Reading as amended in HD 3 with Representative(s) Iwamoto voting aye with reservations; none voting no (0) and Representative(s) Cochran, Marten excused (2). Transmitted to Senate.
lower
Apr 2, 2025
Lower · Passed
The committee on FIN recommend that the measure be PASSED, WITH AMENDMENTS. The votes were as follows: 15 Ayes: Representative(s) Yamashita, Takenouchi, Grandinetti, Holt, Hussey, Keohokapu-Lee Loy, Kitagawa, Kusch, Lamosao, Lee, M., Miyake, Morikawa, Templo, Alcos, Reyes Oda; Ayes with reservations: none; Noes: none; and Excused: none.
lower
Mar 21, 2025
Committee
Report adopted; referred to the committee(s) on FIN as amended in HD 2 with none voting aye with reservations; none voting no (0) and Representative(s) Cochran, Garrett, Kapela, Kitagawa, Ward excused (5).
lower
Mar 21, 2025
Committee
Reported from JHA (Stand. Com. Rep. No. 1460) as amended in HD 2, recommending referral to FIN.
lower
Mar 18, 2025
Lower · Passed
The committee on JHA recommend that the measure be PASSED, WITH AMENDMENTS. The votes were as follows: 10 Ayes: Representative(s) Tarnas, Poepoe, Belatti, Hashem, Kahaloa, Perruso, Takayama, Todd, Garcia, Shimizu; Ayes with reservations: none; Noes: none; and 1 Excused: Representative(s) Cochran.
lower
Mar 14, 2025
Committee
Reported from WAL (Stand. Com. Rep. No. 1265) as amended in HD 1, recommending passage on Second Reading and referral to JHA.
lower
Mar 11, 2025
Lower · Passed
The committee on WAL recommend that the measure be PASSED, WITH AMENDMENTS. The votes were as follows: 9 Ayes: Representative(s) Hashem, Lamosao, Belatti, Ichiyama, Morikawa, Poepoe, Shimizu, Souza; Ayes with reservations: Representative(s) Iwamoto; Noes: none; and 1 Excused: Representative(s) Woodson.
lower
Mar 6, 2025
Committee
Referred to WAL, JHA, FIN, referral sheet 19
lower
Mar 4, 2025
Introduced
Received from Senate (Sen. Com. No. 277) in amended form (SD 2).
lower
Mar 4, 2025
Upper · Passed
Report adopted; Passed Third Reading, as amended (SD 2). Ayes, 25; Aye(s) with reservations: none . Noes, 0 (none). Excused, 0 (none). Transmitted to House.
upper
Feb 26, 2025
Upper · Passed
The committee(s) on WAM recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in WAM were as follows: 13 Aye(s): Senator(s) Dela Cruz, Moriwaki, Aquino, DeCoite, Elefante, Hashimoto, Inouye, Kanuha, Kidani, Kim, Lee, C., Wakai, Fevella; Aye(s) with reservations: none ; 0 No(es): none; and 0 Excused: none.
upper
Feb 20, 2025
Upper · Passed
The committee(s) on WAM will hold a public decision making on 02-26-25 10:03AM; Conference Room 211 & Videoconference.
upper
Feb 11, 2025
Committee
Reported from EIG/HHS (Stand. Com. Rep. No. 221) with recommendation of passage on Second Reading, as amended (SD 1) and referral to WAM.
upper
Feb 6, 2025
Upper · Passed
The committee(s) on EIG recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in EIG were as follows: 4 Aye(s): Senator(s) Wakai, Chang, DeCoite, Fevella; Aye(s) with reservations: none ; 0 No(es): none; and 1 Excused: Senator(s) Richards.
upper
Feb 6, 2025
Upper · Passed
The committee(s) on HHS recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in HHS were as follows: 3 Aye(s): Senator(s) San Buenaventura, Hashimoto, Fevella; Aye(s) with reservations: none ; 0 No(es): none; and 2 Excused: Senator(s) Aquino, Keohokalole.
upper
Jan 31, 2025
Upper · Passed
The committee(s) on EIG/HHS has scheduled a public hearing on 02-06-25 3:00PM; Conference Room 016 & Videoconference.
upper
Jan 27, 2025
Committee
Referred to EIG/HHS, WAM.
upper
Jan 23, 2025
Introduced
Introduced and passed First Reading.
upper
Jan 21, 2025
Introduced
Pending Introduction.
upper
3 primary · 0 co-sponsors

Sponsors