Is it acceptable to burn pressure-treated wood?

Burning pressure-treated wood is not acceptable due to the harmful chemicals that are used in its treatment process. This type of wood is typically treated with preservatives such as chromated copper arsenate (CCA), which contains toxic substances like arsenic and chromium. When burned, these chemicals can be released into the air as harmful fumes, posing significant health risks to people nearby and contributing to environmental pollution.

Furthermore, the ash produced from burning pressure-treated wood can also be contaminated with these toxic substances, creating even more potential hazards if used in gardens or landscaping. Regulations in many areas discourage or outright prohibit the burning of treated wood for these reasons, aligning with safety and environmental concerns.

The alternative choices may imply varying degrees of acceptability or conditions for burning, but they do not adequately account for the inherent risks associated with the chemicals in pressure-treated wood, reinforcing that it should not be burned under any circumstances.