In 2021, Assembly Bill 332 was passed into law. In accordance with Health and Safety Code Section 25230.15, Western Wood Preservers Institute developed the TWWDisposal.org website with resources on appropriate handling, storage, labeling, transport, notifications, recordkeeping, reuse, and disposal of Treated Wood Waste. Educational materials have been updated for 2026 and are included below.
Educational Resources for Treated Wood Waste – Updated 2026
Visit the TWWDisposal website for additional information.