Sponsored by The Climate Center

SB 279 (McNerney) Expanding Composting Capacity for California Farms and Communities

Composting on a farm. Photo by Canva.

SB 279 would expand composting capacity on farms and in communities, divert more food scraps from landfills, and provide California growers with a climate-friendly alternative to open burning. 

Composting creates healthy soils that draw carbon out of the atmosphere, retain water, and increase food security. It also reduces climate pollution by preventing methane emissions. By expanding the state’s composting capacity, we contribute to a climate-safe future for all.

Currently, when California farms and vineyards have large amounts of green waste, they must ship the material to a large composting facility. Unfortunately, California has a shortage of composting facilities. Coupled with a ban on agricultural burning that went into effect on January 1, 2025, growers need an eco-friendly alternative that will build healthy soils and reduce landfill waste.

SB 279 would allow growers to compost their agricultural waste onsite, keeping critical nutrients on the land and reducing the need to haul or burn the scraps. It will meaningfully increase community composting capacity, allowing operations like urban farms and school gardens to recycle more of their organic material onsite. SB 279 also increases farmers’ narrow profit margins by allowing them to sell or give away up to 5,000 cubic yards of compost a year.

This bill is co-sponsored by The Climate Center, People, Food, and Land Foundation, California Alliance for Community Composting, Californians Against Waste, Western Tree Nut Association, and California Association of Winegrape Growers. 

Full bill text and more info.

Committee Status: SB 279 passed the California legislature unanimously on September 9. The bill now awaits the governor’s signature.

Urge Governor Newsom to sign SB 279 below!

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