URBAN BENCHES

Yes, many public benches are treated with chemicals, but the type and amount depend on the material and intended use. For example, wooden benches in parks are often pressure-treated with preservatives like copper azole or alkaline copper quaternary (ACQ) to protect against rot, insects, and weather damage. These are considered low-toxicity alternatives to the older chromated copper arsenate (CCA), which was phased out for residential use in many countries due to arsenic concerns. For public safety, regulatory agencies like the U.S. Environmental Protection Agency (EPA) and the European Chemicals Agency (ECHA) set strict limits on chemical leaching. In practice, once the treatment dries and the bench is installed, the risk to the public is minimal—you can sit on it without worry. However, for benches in playgrounds or areas where children might put their hands in their mouths, many municipalities now opt for naturally rot-resistant woods (like cedar or redwood), recycled plastics, or metal with powder-coated finishes that require no chemical preservatives. If you’re concerned about a specific bench, look for a manufacturer’s label or check with your local parks department. Most importantly, if a bench looks oily, smells strongly of chemicals, or is visibly peeling, it’s best to avoid direct skin contact and report it to park maintenance.