Bon Aqua is an unincorporated community in Hickman County, Tennessee, United States. Bon Aqua is located in northern Hickman County, 9.2 miles south-southeast of Dickson. It also covers parts of Southeast Dickson county, and parts of Western Williamson county. Bon Aqua has a post office with ZIP code 37025, which opened on March 5, 1842.The community was named for the "good water" of a nearby mineral spring.