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Hazardous Waste Symbol Picture by Francisco Javier Argel at

Hazardous Waste Warning

Wastes in this section are dangerous to you and the environment. Handle them carefully and dispose of them properly.
Legally, households may not transport more than 15 gallons of wet or 125 pounds of dry hazardous materials. Read about the regulation.

Treated Wood

Treated wood, commonly used in fence posts, decking, and landscaping projects, contains chemicals to protect the wood from insects and fungal decay. Among these chemicals are arsenic, chromium, copper, and creosote. While they do a great job preserving the wood, the chemicals are anything but great if they end up in our environment. The facilities listed below will properly manage your treated wood waste (TWW). Beginning January 1, 2021, regulatory changes have limited the types of facilities that are able to accept treated wood waste. We will update our locations list as we find more locations accepting this waste. The County is actively working to obtain the new certification needed to once again accept TWW. Please see our flyer for additional information. Additionally, the California Department of Toxic Substances Control (DTSC) released this information sheet to help answer any questions regarding TWW.

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