Chelsea Kolb is an associate engineer at RAND. She holds a PhD in civil and environmental engineering from Carnegie Mellon University. Her dissertation work focused on modeling the effects of source water bromide on drinking water disinfection by-product (DBP) formation and health risk. She also assessed the efficacy of the regulatory framework for DBPs when bromide is elevated. Kolb also received a Fulbright Fellowship where she worked with the Costa Rican Ministry of the Environment and the National University of Costa Rica to model the effects of saltwater intrusion in a coastal aquifer system. Prior to beginning graduate school, Kolb served as a Peace Corps volunteer in Peru where she worked to improve access to sanitation in rural communities.