William Reilly served as administrator of the US Environmental Protection Agency from 1989 to 1992. He was a senior advisor to TPG Capital until 2017 and was a founding partner of Aqua International. Reilly began his career in public service in the 1970s when he was named a senior staff member of the President’s Council on Environmental Quality. He left the White House upon his selection as president of the Conservation Foundation in 1973. The Conservation Foundation merged with the World Wildlife Fund in 1985. Reilly remained president of the Fund until his appointment to the EPA.

Reilly has remained active in environmental affairs since leaving government. In 1992, he led the US delegation to the United Nations Earth Summit in Rio and in 2010, he was appointed co-chair of the National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling. Reilly is chair emeritus and former president of the World Wildlife Fund, chair of the ClimateWorks Foundation, chair of the Advisory Board for the Nicholas Institute for Environmental Policy Solutions at Duke University, co-chair of the Bipartisan Policy Center’s Energy Project, co-chair of the Global Water Challenge, and a director of the Packard Foundation. He recently rotated off the board of DuPont, and currently serves as a director of ConocoPhillips, Royal Caribbean International, and Energy Future Holdings.

Reilly was elected to the American Academy of Arts and Sciences and holds a BA degree from Yale, a JD from Harvard, and a MS in urban planning from Columbia University.

Reilly formerly served as a member of the Dialogue