Daniel W. Smith was a Stanford PhD candidate in environmental engineering. He studies how improvements to drinking water services can be sustained and scaled up in lower-income settings using methods from engineering, economics, and social sciences. Smith’s interdisciplinary outlook is inspired by his prior work in hazardous waste engineering, building municipal drinking water treatment plants in Central America, and managing water, sanitation, and hygiene programs in Latin America and Africa. His research focuses on assessing demand for improvements to microbial water quality in Dhaka, Bangladesh and the reliability of rural water supplies in Uganda. He holds a BS from Cornell University (magna cum laude), MSc in water, sanitation, and health engineering from the University of Leeds (with distinction), and an MS in environmental engineering from Stanford. He is a National Defense Science & Engineering Graduate Fellow, Stanford Graduate Fellow in Science & Engineering, and a former Fulbright Scholar.