AB 643 California Assembly · 2025-2026 Regular Session

Climate change: short-lived climate pollutants: organic waste reduction.

Summary
Existing law establishes methane emissions reduction goals that include a target to reduce landfill disposal of organics by 75% of the 2014 level of the statewide disposal of organic waste by 2025. Existing law requires the Department of Resources Recycling and Recovery, in consultation with the State Air Resources Board, to adopt regulations to achieve the organic waste reduction goals. Existing law authorizes a local jurisdiction to count specified recovered organic waste products towards up to 10% of its recovered organic waste procurement target. This bill would additionally authorize a local jurisdiction to count a beneficial agricultural amendment derived from organic waste that may include biosolids towards up to that 10% of its recovered organic waste procurement target if the material meets the requirements to be deemed to constitute a reduction in landfill disposal, the material is registered or approved for end use as a fertilizing material by the Department of Food and Agriculture, and the material is not derived from, or processed using, specified activities relating to the final deposition or management of solid waste, as provided. The bill would require the amount of the procured materials to be calculated using the dry weight of the materials. Existing law authorizes a local jurisdiction to count compost produced and procured from specified compost operations towards its recovered organic waste procurement target, including, under specified conditions, operations composting green material, agricultural material, food material, and vegetative food material if the total amount of feedstock and compost onsite at any one time does not exceed 100 cubic yards and 750 square feet. This bill would repeal that authorization, but would instead authorize a local jurisdiction to count towards its procurement target compost produced and procured from certain composting operations, including the composting of green material, agricultural material, food material, and vegetative food material if the total amount of feedstock and compost onsite at any one time does not exceed either 200 cubic yards or, for a composting activity owned by a public agency, as defined, 500 cubic yards, amounts that may be increased by regulation, as specified.
Bill status passed both 4 of 5 stages cleared
Introduction
Feb 2025
Committee Review
Jun 2026
Assembly Passage
Jan 2026
Senate Passage
Aug 2026
Governor
Introduced Feb 13, 2025 Last action Aug 27, 2026
Maddy AI version diff · 7 comparisons

What changed between versions

08/20/26 - Amended Senate AB643 · 1 edit
MINOR
The enrolled version of AB 643 removed a requirement that beneficial agricultural amendments derived from organic waste (including biosolids) must be processed at a department-authorized facility using approved technologies to count toward a local jurisdiction's 10 percent recovered organic waste procurement target. The material now only needs to meet the landfill disposal reduction requirements, broadening eligibility for jurisdictions seeking to use such products.
Scope change
The scope of eligible beneficial agricultural amendments expanded by removing the facility authorization prerequisite, allowing jurisdictions to count more types of biosolids-derived amendments toward their procurement targets without requiring processing at a specifically authorized facility.
ELIGIBILITY

Removed the requirement that beneficial agricultural amendments derived from organic waste (that may include biosolids) must be processed at a facility authorized by CalRecycle using technologies approved under Title 14, Division 7, Chapter 12 of the California Code of Regulations. Previously this was a condition for counting such materials toward the 10 percent procurement target cap; now only the landfill disposal reduction requirement and other conditions (food and agriculture registration, exclusion of solid waste disposal activities) remain.

Floor votes · Senate Jul 2, 2026 · Assembly Jan 26, 2026

How they voted

370
Passed · 3 other
Total votes 40
Jul 2, 2026
D Democratic30
28 Yea 2
93% Yea
R Republican10
9 Yea 1
90% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
35
Key actions
14
Committee
12
Amendments
10
Aug 27, 2026
Lower · Passed
Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 75. Noes 1.).
lower
Aug 25, 2026
Introduced
In Assembly. Concurrence in Senate amendments pending.
lower
Aug 25, 2026
Upper · Passed
Read third time. Passed. Ordered to the Assembly. (Ayes 39. Noes 0.).
upper
Aug 20, 2026
Upper · Passed
Read third time and amended. Ordered to second reading.
upper
Aug 20, 2026
Upper · Passed
Action rescinded whereby the bill was read third time, passed, and to Assembly.
upper
Jul 2, 2026
Introduced
In Assembly. Concurrence in Senate amendments pending.
lower
Jul 2, 2026
Upper · Passed
Read third time. Passed. Ordered to the Assembly. (Ayes 37. Noes 0.).
upper
Jun 29, 2026
Upper · Passed
From committee: Be ordered to second reading file pursuant to Senate Rule 28.8 and ordered to Consent Calendar.
upper
Jun 17, 2026
Upper · Passed
From committee: Do pass and re-refer to Com. on APPR. with recommendation: To Consent Calendar. (Ayes 7. Noes 0.) (June 17). Re-referred to Com. on APPR.
upper
Jun 3, 2026
Introduced
From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on E.Q.
upper
May 28, 2026
Upper · Passed
In committee: Hearing postponed by committee.
upper
May 19, 2026
Introduced
From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on E.Q.
upper
May 6, 2026
Committee
Referred to Com. on E.Q.
upper
Jan 26, 2026
Lower · Passed
Read third time. Passed. Ordered to the Senate. (Ayes 60. Noes 4. Page 3837.)
lower
Jan 22, 2026
Lower · Passed
From committee: Do pass. (Ayes 14. Noes 1.) (January 22).
lower
Jan 15, 2026
Committee
Re-referred to Com. on APPR.
lower
Jan 14, 2026
Lower · Passed
Read second time and amended.
lower
Jan 13, 2026
Introduced
From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 12. Noes 1.) (January 12).
lower
Jan 6, 2026
Committee
Re-referred to Com. on NAT. RES.
lower
Jan 5, 2026
Introduced
From committee chair, with author's amendments: Amend, and re-refer to Com. on NAT. RES. Read second time and amended.
lower
Apr 21, 2025
Lower · Passed
In committee: Hearing postponed by committee.
lower
Apr 8, 2025
Lower · Passed
In committee: Hearing postponed by committee.
lower
Mar 25, 2025
Committee
Re-referred to Com. on NAT. RES.
lower
Mar 24, 2025
Introduced
From committee chair, with author's amendments: Amend, and re-refer to Com. on NAT. RES. Read second time and amended.
lower
Mar 24, 2025
Committee
Referred to Com. on NAT. RES.
lower
Feb 14, 2025
Lower · Passed
From printer. May be heard in committee March 16.
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Lori Wilson
Lori Wilson
DDemocratic
CA
11