Located in New Haven County and the west-central part of the state of Connecticut in the Naugatuck River, Waterbury is coextensive with the town, or township, of Waterbury. The city came to be called Waterbury because of the numerous and abundant drainage in the area. At the beginning of the 19th century, industrialization was able to stimulate the economic growth of Waterbury and eventually became the United States’ biggest brass products producer. The other manufacturers have included watches and clocks, which were marketed and made accessible by Robert H. Ingersoll, including pewters, and buttons. Also present in the city are Teikyo Post University, Naugatuck Valley Community-Technical College, as well as the extension of the University of Connecticut.