HCA is located at the St. Stephen’s Aquatic Center, a best-in-class training facility located on the campus of the St. Stephen’s Episcopal School, a coeducational boarding and day school in Austin, Texas, serving students in grades 6 - 12. Scheduled to be completed in early September 2025, the Aquatic Center is the result of a $17 million donation from the Still Water Foundation, one of the largest gifts ever made to an independent school in Texas. The facility houses a 50-meter Myrtha pool that can be configured into 22 lanes (short course yards) or 8 lanes (long course meters).