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 |Add To My Favorites |Track Bill | Version: 05/14/26 - Amended Senate
 04/16/26 - Amended Senate
 03/25/26 - Amended Senate
 02/10/26 - Introduced

 SB-1031 Solid waste: compostable products.(2025-2026)

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 Date Published: 05/15/2026 10:33 AM

SB1031:v96#DOCUMENTBill Start

 Amended
 IN 
 Senate
 May 14, 2026

 Amended
 IN 
 Senate
 April 16, 2026

 Amended
 IN 
 Senate
 March 25, 2026

 CALIFORNIA LEGISLATURE—
 2025–2026 REGULAR SESSION

 Senate Bill

No. 1031

Introduced by Senator Blakespear

February 10, 2026

An act to amend Section 42357 of, and to add Section 42357.1 to, the Public Resources Code, relating to solid waste. 

LEGISLATIVE COUNSEL'S DIGEST

SB 1031, as amended, Blakespear.
 Solid waste: compostable products.

Existing law prohibits a person from selling or offering for sale a product, as defined, that is labeled with the term “compostable” or “home compostable” unless, among others, the product is labeled in a manner that distinguishes the product from a noncompostable product upon reasonable inspection by consumers and to help enable efficient processing by solid waste processing facilities.

This bill would instead require the product to be labeled in a manner that distinguishes the product from a noncompostable product upon reasonable inspection by consumers and by solid waste processing facilities during receiving and processing. The bill would require a plastic product that meets certain ASTM standard specifications regarding the compostability of plastics to be labeled with the word “compostable,” as specified.

Existing law prohibits a person from selling or offering for sale a product that is labeled with the term “biodegradable,” “degradable,” or “decomposable,” or any form of those terms, or in any way implies that the product will break down, fragment, biodegrade, or decompose in a landfill or other environment, except as provided.

This bill would additionally apply that prohibition to a product that is labeled with the term “compostable except in California.”

This bill would require the Office of Environmental Health Hazard Assessment to conduct a study evaluating the health effects of degraded compostable plastics and their additives, as provided. The bill would require the office to provide biennial status updates, which may include a compilation of the study findings into a report, and to post the final report on its internet website.

Digest Key

 Vote:
 MAJORITY 
 Appropriation:
 NO 
 Fiscal Committee:
 YES 
 Local Program:
 NO 

Bill Text

The people of the State of California do enact as follows:

SECTION 1.

 Section 42357 of the Public Resources Code is amended to read:

42357.

 (a) (1) Except as provided in paragraph (3), a person shall not sell or offer for sale a product in this state that is labeled with the term “compostable” or “home compostable” unless, at the time of sale or offering for sale, the product meets the applicable ASTM standard specification, as specified in paragraph (1) of subdivision (b) of Section 42356, or, if applicable, the product has OK compost HOME certification, as provided in paragraph (4).

(2) Compliance with only a section or a portion of a section of an applicable ASTM standard specification does not constitute compliance with paragraph (1).

(3) Notwithstanding paragraph (1), a person may sell or offer for sale a product in this state that is labeled with a qualified claim for a term specified in paragraph (1), if the product meets the relevant standard adopted by the department pursuant to Section 42356.2.

(4) (A) A product shall not be labeled with the term “home compostable” unless the manufacturer of that product holds OK compost HOME certification with regard to that product, except as provided in subparagraph (B) or (C).

(B) Notwithstanding paragraph (1), if the ASTM adopts a standard specification for the term “home compostable” on or before January 1, 2016, and the department determines that the ASTM standard specification is at least equal to, or more stringent than, the
 OK compost HOME certification, a product labeled with the term “home compostable” shall meet that ASTM standard specification. The department may also take the actions specified in Section 42356.1 with regard to an ASTM standard for home compostability.

(C) If the department adopts a standard pursuant to Section 42356.2,