Jaci is a professor of Civil and Environmental Engineering and the southwest gas professor of Renewable Energy. Her research involves technology development for water and wastewater systems using both physic-chemical and biological methods. She has participated in multidisciplinary collaborations with microbiologist, geochemists, hydrologists, chemists, metallurgists, and engineers on research for a variety of environmental issues of international and national significance. Funding for her research has come from industry, federal, state, and local agencies.