On Nov. 30, 2008, Holy Family Parish in Security and St. Joseph Parish in Fountain merged to form a new parish, St. Dominic. Nick Venetucci and his wife Bambi donated 15 acres of land on the Venetucci Farm property to be used to build a new Catholic Church in the Fountain Valley.
Bishop Michael Sheridan and Father Bill Carmody, pastor of both St. Joseph and Holy Family parishes, celebrated a Blessing of the Land on May 9, 2004. The parishioners celebrated this occassion by having a picnic after the blessing.
Bishop Sheridan, along with Father Carmody and the Building and Grounds Committee, led the official groundbreaking ceremony on July 7, 2007.
Both St. Joseph and Holy Family Parishes had a contest to name the new church and three possibilities were submitted to Bishop Sheridan. Bishop Sheridan made his choice and these two parishes together became St. Dominic Parish on the first Sunday of Advent, Nov. 30, 2008. The official dedication of St. Dominic Church took place on March 16, 2010.