Splashtown San Antonio opened in 1985 as Water Park USA. It was sold to Wave Management, its second owner, in 1989. Its third owner since it opened was Chrismari Inc. of San Antonio. Chrismari Inc. bought the park in 1991 and formed Surf San Antonio Inc. to manage the property, with Keith D. Kinney serving as president and general manager. International Theme Park Services Inc. announced in 2005 that it was looking for a buyer for Splashtown San Antonio. During 2006, Mr. Kinney bought out the other shareholders' interest in the property and became the sole owner.
Located on the city's inner northeast side, Splashtown features a half-million-gallon wave pool, a quarter-mile-long lazy river, 40 water slides and tube rides (including 18 for guests under 48 inches (1,200 mm) tall), an activity pool with lily pads and balance logs, water and beach volleyball, and basketball.