Frequent Questions

What is being done about wood treated with CCA (chromated copper arsenate)?

Chromated copper arsenate (CCA) is a pesticide containing chromium, copper, and arsenic that protects wood against termites, fungi and other pests that can degrade or threaten the integrity of wood products. The following information is focused on residential uses of CCA:

  • CCA has been used as a wood preservative pesticide since the 1940s. CCA pesticides are currently registered for use only by certified pesticide applicators using specialized high-pressure equipment in wood treatment facilities to produce commercial wood shake, shingles, permanent foundation support beams and other wood products permitted by approved labeling.
  • In December 2003, CCA manufacturers discontinued manufacturing products for residential uses. EPA has not banned CCA, and does not require the removal of existing structures made with CCA-treated wood or the surrounding soil.
  • Learn more about CCA

Questions? Contact the National Pesticide Information Center (NPIC). NPIC is an EPA-sponsored hotline which provides a variety of impartial information on all pesticides.




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