The American Radio Relay League is headquartered in Newington, with a call sign of W1AW. Newington is also home to Mill Pond Falls, the smallest natural waterfall in the country. It is celebrated each fall during the Waterfall Festival. Newington is a town in Hartford County, Connecticut, United States. As of the 2000 census, it had a total population of 29,306. The Connecticut Department of Transportation has its headquarters in Newington.