The Alcohol and Tobacco Tax and Trade Bureau (TTB) establishes the approximately 1,246 square-mile "Eastern Connecticut Highlands" viticultural area in all or portions of Hartford, New Haven, Tolland, Windham, New London, and Middlesex Counties in Connecticut. The Eastern Connecticut Highlands viticultural area is not located within any other established viticultural area and does not overlap any other established AVA. TTB designates viticultural areas to allow vintners to better describe the origin of their wines and to allow consumers to better identify wines they may purchase.