William K. Reilly

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"My experience convinces me that the time will come again when the era will be marked by an openness to invention, innovation, and creativity, and that now is the time to take stock, make plans, and prepare for that moment."



Administrator, US Environmental Protection Agency

Co-Chair, President's Commission on Deepwater Horizon

Member, President's Commission on Global Development

Founding Trustee, Presidio Trust of San Francisco

Senior Staff Member, Council on Environmental Quality

Captain, United States Army



President and Chairman, World Wildlife Fund

Chairman, ClimateWorks Foundation

Chairman, Global Water Challenge

Chair, Nicholas Institute for Environmental Policy Solutions

Director, Packard Foundation

Board Member, CSIS

Executive Committee Member, US Water Partnership


Private sector

Advisor, TPG Capital

Founding Partner, Aqua International Partners

Director, Royal Caribbean

Director, ConocoPhillips

Director, DuPont

WILLIAM K. REILLY has enjoyed careers in public service, non-governmental organizations, and private sector finance. He has served four US Presidents: Presidents Nixon, George H.W. Bush, Clinton and Obama. For more than 20 years he was a Senior Advisor to TPG Capital, an international investment partnership. During his tenure with TPG, he was the Founding Partner of Aqua International Partners, a private equity fund dedicated to investing in companies in the water sector. Before joining TPG, Mr. Reilly was the first Payne Visiting Professor at Stanford University. 

Mr. Reilly was Administrator of the U.S. Environmental Protection Agency from 1989 to 1993, during which he led efforts to pass a new Clean Air Act and headed the U.S. delegation to the UN Conference on Environment and Development in Rio in 1992.  He served as president of World Wildlife Fund and later chairman of the board; president of The Conservation Foundation; and director of the Rockefeller Task Force on Land Use and Urban Growth. Mr. Reilly has chaired the Board of the Global Water Challenge and Climate Works Foundation. He serves on the Executive Committee of the U.S. Water Partnership and the board of the Center for Strategic and International Studies.  He has also served on several corporate boards, including DuPont, ConocoPhillips, and Royal Caribbean. 

Mr. Reilly has served four US Presidents. In addition to his service as EPA Administrator under President George H. W. Bush, from 1970-1972 he was a senior staff member at the White House Council on Environmental Quality, under President Nixon. President Clinton appointed Mr. Reilly as a founding Trustee of the Presidio Trust of San Francisco.  President Obama appointed him co-chair of the National Commission on the BP Deepwater Horizon Oil Spill and the Future of Offshore Drilling, and in late 2012 to the President’s Global Development Council for which he headed the working group on climate smart food security.  He served in the U.S. Army to the rank of Captain, 1966-1968. He and his wife Elizabeth reside in San Francisco.



"Today, it is time for Americans to unite behind a new cause, the City Sustainable, an effective and galvanizing successor to the City Beautiful Movement.  Its stirrings have already begun in Chicago and many other cities.  Its demands for reduced water use and greater energy efficiency, for better insulation and green roofs, for reflective paving and climate-appropriate vegetation, and more tree cover and a more congenial environment for pedestrians, bicyclists, and for public transportation—all of this can be accomplished In fact, it is being done.  Its success may save us from the ideological gridlock in Washington."