Wawa is an unincorporated community located in Delaware County, in the U.S. state of Pennsylvania in Greater Philadelphia, partially in Middletown Township and partially in Chester Heights Borough. In the 1700s, people from Philadelphia and New Jersey settled Wawa due to the community's abundance of water. Various mills, including gristmills and paper mill…Wawa is an unincorporated community located in Delaware County, in the U.S. state of Pennsylvania in Greater Philadelphia, partially in Middletown Township and partially in Chester Heights Borough. In the 1700s, people from Philadelphia and New Jersey settled Wawa due to the community's abundance of water. Various mills, including gristmills and paper mills, opened on area creeks. Wawa was originally known as Pennellton and Grubb's Bridge. When Edward Worth built an estate here, he named it "Wawa", the Ojibwe word for "wild goose", because of the flocks of geese attracted to the still water behind Lenni milldam. The name had been transferred to the town by 1884. Forge Hill was added to the National Register of Historic Places on March 7, 1973.