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Sonoma County Waste Management Agency

Municipal composting

Steaming Composting piles

Accepted in the green cart:

  • Garden and
    landscape prunings
    (maximum 4 feet long)
  • Grass clippings
  • Leaves and weeds
  • Fruit and peelings
  • Vegetables and peelings
  • Pasta and rice
  • Bread
  • Tea bags
  • Coffee grounds and filters
  • Eggshells
  • Wood ashes (cold)

Prohibited in the green cart:

  • Plastic bags, including
    compostable plastic bags
  • Palm fronds
  • Pampas grass or bamboo
  • Poison oak
  • Cactus
  • Sudden Oak Death
    infested material
  • Meat and bones
  • Cooking oil and
    liquid waste
  • Dairy and cheese
  • Sod
  • Dirt
  • Rocks
  • Animal waste
  • Tree stumps
  • Other refuse

Download a .pdf fact sheet About Central Disposal Site (PDF: 60 KB)

Municipal composting program operations

Where to drop off green waste?

Drop-off recyclable yard debris and veggie scraps at any County Refuse Disposal Site. See Search disposal sites for locations.
Remember that when visiting disposal sites, the cost for dropping off compostable yard debris is much less than the cost for disposing of garbage.

What are the fees for dropping off green waste?

Visit Fee Schedule for all County Refuse Disposal Sites.

What happens to my green waste?

Sonoma Compost Company closed October 1, 2015. The yard debris and vegetative food waste collected from County Refuse Disposal sites and from weekly pick up of residential curbside green waste now gets transferred from the Central Disposal Site and other transfer stations to composting facilities located outside Sonoma County. Currently, these three composting facilities are Jepson Prairie Organics, Redwood Landfill and Cold Creek Compost

Will the municipal composting program ever return to Sonoma County?

The Agency is working on development of a permanent facility to allow composting, including wood waste processing,  to return to Sonoma County for the long term. For details about the necessity to close Sonoma County’s Municipal Composting Facility, see News release May 22, 2015, Federal Lawsuit Leads to Closure of Sonoma County’s Municipal Composting Facility

For more information about green waste accepted at County Refuse Disposal Sites:

Sonoma Compost Company
(707) 664-9113

Sonoma County Waste Management Agency Eco-Desk
(707) 565-3375

See Search disposal sites

Sonoma County Waste Management Agency ● 2300 County Center Drive, Suite B-100 ● Santa Rosa, CA 95403