Brookfield Soccer Association 19485 W Lisbon Rd, Brookfield, WI53045 Brookfield Soccer Association (BSA) is a volunteer organization dedicated to youth sports and education. We are a…More private, non-profit organization with close ties to the City of Brookfield and the Elmbrook School District. Founded in 1975, with just one team of 17 players, BSA now has more than 1,000 players on both recreational and competitive teams. We field coed and girls' teams for players, from the City of Brookfield and other surrounding communities, ages 5 through 19. BSA also has adult pick-up games throughout the summer.