Hiddenbrook Swim Team is part of the Northern Virginia Swim League (NVSL). The NVSL is America's largest summer swim league comprised of over 100 teams and 15,000 swimmers.

The purpose of the league is to sponsor competitive swimming and activities among community pools in Northern Virginia and to develop in the children participating in this program a love for the sport, advanced aquatic skills, teamwork, and the principals of good sportsmanship.