Erin Willson was nominated to the 2012 Canadian Olympic Synchronized Swimming Team.
In 2011 at the FINA World Aquatic Championships she would capture a bronze in the combo event as an alternate.
At the 2010 FINA World Cup, Willson would go on to capture double bronze in the team and combo events.
In 2009, she and the team would finish just off the podium in the technical team event at the FINA World Aquatic Championships, finishing fourth.
Willson joined the national senior team in the fall of 2007.