Triclosan is a non-ionic chlorinate bisphenol antiseptic found in some mouthwashes. Aryldithiocarboxylic acids, e.g., dithiobenzoic acid, chlorinate to give the thioacyl chlorides. Then, phosphorus pentachloride (PCl) is used to chlorinate the carboxylic acid forming an acyl chloride. Staff chlorinate the water to ensure health and safety standards. In February 2015, the city completed a project to chlorinate all of its water.