Lone Star Aquatic Club P.O. Box 851 Round Rock, TX 78680 History The Lone Star Aquatic Club (LSAC) is composed of a United States Swimming (USA Swimming) age group swimming program and a United States Master Swimming (USMS) program StarMasters. Our team has provided top-notch instructional, recreational, and competitive programs for athletes of all ages and abilities since 1989. Over the years, ...