Colorado state champions: 1996, 1997, 1998, 2001, 2003, 2004, 2005
Success in water for the Mustangs keeps them in the deep end of the sport. They have won seven state championships (in Class 4A), all over a 10-year span. It's a total that places Mullen second in Colorado annals. It's particularly notable in that the Mustangs don’t have their own pool and can't host a home meet – hence, they are in road meets throughout the season. Mullen practices at Denver’s Athmar Recreation Center. In 2018-19, the Mustangs finished fourth in 4A.