Patricia Mulroy was born in Frankfurt, Germany on February 24, 1953. As a young girl, she lived in several different countries, but always felt that the United States was her home. Her experiences abroad led her to develop a fascination with government work and state service. She arrived in Nevada in 1974 to attend the University of Nevada, Las Vegas. In 1989, Mulroy became the general manager of the Las Vegas Valley Water District. She entered the field at a tumultuous time, facing the drought of the Colorado River and tension within the districts.