As of 2015, the only known indoor waterpark in Connecticut is CoCo Key Water Resort Hotel & Convention Center in Waterbury. The indoor waterpark is kept at 84 F, so visitors can experience a Key West-style vacation without traveling far, notes the official website.
The CoCo Key Water Resort Hotel & Convention Center covers 50,000 square feet and includes three 40-foot body and raft rides. The activity pool includes a lily pad adventure game and water basketball. Visitors can eat at CoCo's Snack and Pizza Express.
While Connecticut only has one indoor waterpark, it has several outdoor waterparks, such as Lake Compounce and Quassy Amusement Park, notes CBS Connecticut.