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CaliforniaAB 4112025-2026 Regular SessionHouseWALLET

Livestock carcasses: disposal: composting.

Sponsored By: Diane Papan (Democratic)

Signed by Governor

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Bill Overview

Analyzed Economic Effects

2 provisions identified: 1 benefits, 1 costs, 0 mixed.

Farms can compost livestock carcasses

The law lets livestock owners compost carcasses from routine natural deaths or on‑farm slaughter done under state rules. This permission applies even if past state solid‑waste rules banned it. It does not cover animals euthanized with barbiturates, deaths from reportable diseases, or deaths in quarantined places.

Rules and limits for carcass composting

You must follow state best management practices that protect groundwater, public health, and the food supply. Total composting material onsite, including carcasses, is capped at 100 cubic yards at any time. All materials must come from agricultural land you own or lease. Composting must be on land you own or lease; if not at the death site, it must be in the same or an adjacent county and transport must follow state and local laws. After curing, spread the compost only on your own agricultural land and follow the BMPs. Within 30 days of starting, notify the local enforcement agency and the regional water board and include the site location and your contact information.

Sponsors & Cosponsors

Sponsor

  • Diane Papan

    Democratic • House

Cosponsors

  • Juan Alanis

    Republican • House

Roll Call Votes

All Roll Calls

Yes: 258 • No: 0

House vote • 9/9/2025

Item 215 — Assembly AFLOOR

Yes: 77 • No: 0

Senate vote • 9/8/2025

Item 266 — Senate SFLOOR

Yes: 39 • No: 0

legislature vote • 8/29/2025

Vote in CS61

Yes: 7 • No: 0

legislature vote • 8/18/2025

Vote in CS61

Yes: 7 • No: 0

legislature vote • 7/16/2025

Vote in CS64

Yes: 8 • No: 0

legislature vote • 7/1/2025

Vote in CS40

Yes: 5 • No: 0

House vote • 6/2/2025

Item 79 — Assembly AFLOOR

Yes: 79 • No: 0

legislature vote • 5/23/2025

Vote in CX25

Yes: 14 • No: 0

legislature vote • 4/21/2025

Vote in CX16

Yes: 14 • No: 0

legislature vote • 3/26/2025

Vote in CX01

Yes: 8 • No: 0

Actions Timeline

  1. Chaptered by Secretary of State - Chapter 613, Statutes of 2025.

    10/11/2025Senate

  2. Approved by the Governor.

    10/11/2025legislature

  3. Enrolled and presented to the Governor at 2 p.m.

    9/16/2025legislature

  4. Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 77. Noes 0. Page 3105.).

    9/9/2025House

  5. In Assembly. Concurrence in Senate amendments pending.

    9/8/2025House

  6. Read third time. Passed. Ordered to the Assembly. (Ayes 39. Noes 0. Page 2612.).

    9/8/2025Senate

  7. Read second time. Ordered to third reading.

    8/29/2025Senate

  8. From committee: Do pass. (Ayes 7. Noes 0.) (August 29).

    8/29/2025Senate

  9. In committee: Referred to suspense file.

    8/18/2025Senate

  10. Read second time and amended. Re-referred to Com. on APPR.

    7/17/2025Senate

  11. From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 8. Noes 0.) (July 16).

    7/16/2025Senate

  12. From committee: Do pass and re-refer to Com. on E.Q. (Ayes 5. Noes 0.) (July 1). Re-referred to Com. on E.Q.

    7/1/2025Senate

  13. Referred to Coms. on AGRI. and E.Q.

    6/11/2025Senate

  14. In Senate. Read first time. To Com. on RLS. for assignment.

    6/3/2025Senate

  15. Read third time. Passed. Ordered to the Senate. (Ayes 79. Noes 0. Page 1826.)

    6/2/2025House

  16. Read second time. Ordered to third reading.

    5/27/2025House

  17. From committee: Do pass. (Ayes 14. Noes 0.) (May 23).

    5/23/2025House

  18. In committee: Set, first hearing. Referred to APPR. suspense file.

    5/7/2025House

  19. Re-referred to Com. on APPR.

    4/24/2025House

  20. Read second time and amended.

    4/23/2025House

  21. From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 14. Noes 0.) (April 21).

    4/22/2025House

  22. Re-referred to Com. on NAT. RES.

    4/3/2025House

  23. From committee chair, with author's amendments: Amend, and re-refer to Com. on NAT. RES. Read second time and amended.

    4/2/2025House

  24. From committee: Do pass and re-refer to Com. on NAT. RES. (Ayes 8. Noes 0.) (March 26). Re-referred to Com. on NAT. RES.

    3/27/2025House

  25. Re-referred to Com. on AGRI.

    2/25/2025House

Bill Text

  • Chaptered

    10/11/2025

    HTML

  • Enrolled

    9/11/2025

    HTML

  • Amended Senate

    7/17/2025

    HTML

  • Amended Assembly

    4/23/2025

    HTML

  • Amended Assembly

    4/2/2025

    HTML

  • Amended Assembly

    2/24/2025

    HTML

  • Introduced

    2/4/2025

    HTML

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