Starting August 21, 2021, local options are available for treated wood waste disposal.

Changes in State law now allow customers to safely dispose of treated wood waste. Treated wood waste can be taken to disposal locations that can be found on Zero Waste Sonoma’s website.

Treated wood is any wood that has been treated with a chemical preservative to protect the wood against attacks from insects, microorganisms, or fungi. It is typically used in outdoor applications such as fences, decks, stairways, etc.

For questions about the responsible disposal of treated wood waste, contact your local Environmental Health Department or the California Department of Toxic Substances Control or email

Contact Regulatory Assistance Officers at 800.728.6942 (800.72.TOXIC) or at