Mark Parshall

Head Coach

Coach Mark has been coaching swimmers of all abilities since 1988. He has coached many swimmers who qualified to compete in Junior Olympics, STAGS, TAGS, Sectionals, Zones, and Junior Nationals championship swim meets, and have gone on to swim collegiately. Additionally, he has trained numerous Top 16 National Qualifiers and swimmers ranked #1 in the nation. He has a unique style that makes training fun.

Coach Mark has been voted South Texas Coach of the Year, and Open Water Coach of the Year. He has represented South Texas as an All-Star and Zone coach since 2003. Mark has been the Texas Swimming Association's All-Star Chair, on the South Texas Board of Directors, as the Coaches Representative, and the Chair of South Texas Swimming. Mark is ASCA Certified Level 4.

Phone: (512) 636-8577


Marcy Parshall

Head Assistant Swim Coach

This is Coach Marcy's 5th season coaching with AquaTex. Marcy's the Head Swim Coach of Gateway Prep School, has been an assistant coach with the RR Dolphins, and part of the South Texas Zone coaching staff.

Marcy has been swimming competitively since she was 4 years old. Marcy has swam at STAGS, TAGS, Sectionals, and Zones for club swimming, and has been a District, Regional, and State qualifier for the Round Rock High School.


Chelsea Olstad

Assistant Swim Coach


James E. Smith

Head Waterpolo Coach

USA Water Polo named Coach James the 2015-16 Top Development Coach for it's national Olympic Development ProgramHe has been Head Coach of the Southwest Zone boys’ team since 2015 and has helped send nearly 10 young Texan boys to the National Team Selection Camp in California.

He helmed the Round Rock High School girls to four TISCA West Region Championships and was Coach of the Year in 2018. Both the boys and girls teams have advanced to the state championships each year he has led them. At La Costa Canyon High School in Carlsbad, CA he led the boys’ squad to the most improved record in the San Diego County in 2002.

He played at Long Beach Wilson High School and UC San Diego and earned his MBA from Georgetown University in Washington, DC. | (512) 994-0085

Jill Sterkel

Waterpolo Coach

Coach Jill is an Olympic swimming champion and former world record-holder. She won four medals in three Olympic Games spanning twelve years. She was the women's head coach of the Texas Longhorns swimming and diving team at the University of Texas at Austin from 1992 to 2007. Most importanly (!) Coach Jill was a member of the 1986 U.S. National Water Polo Team that won a bronze medal at the 1986 World Aquatics Championships.

Coaching Staff

Mark Wayne Parshall

Head Swim Coach/Owner


Marcella Ann Parshall

Head Assistant Swim Coach


Robert Johnson

Assistant Swim Coach


James Edwin Smith

Waterpolo Head Coach