Board of Directors
Association of Environmental Engineering and Science Professors, 2009-present.
Member
Committee on Chemical Engineering and Environment, Fonds Québecois de la Recherche sur la Nature et les Technologies, 2009.
NRC Committee,for Review of the Federal Strategy to Address Environmental, Health, and Safety Research Needs for Engineered Nanoscale Materials, 2008.
Scientific Advisory Board Member
European Center for Geosciences and Environment, Aix-en-Provence, France, 2003-present.
Foresight Advisory Board
Suez-Environnement, Paris, France, 2004-present.
Gubernatorial Appointee
Texas Council on Environmental Technology, 2000 – 2004.
Rapporteur
French Ministry of Research and Education, 2002.
Consultant
USEPA Science Advisory Board, 1999.
Scientific Advisory Board Member
International Center for Water, Nancy, France, 1996-present.
U.S. Director
European Union/United States University Consortium on Environmental Engineering Education, 1993-present.
Advisory Committee member
Universidad Nacional de Litoral, Santa Fe, Argentina, 1998.
Chair
Technical Review Panel of Life Support Systems for Station and Exploration, NASA, 1998.
Panel member
U.S.E.P.A. Blue Ribbon Panel on evaluating costs of Federal environmental regulations, 1996.
Committee member
Environmental Engineering Education Task Group, International Association on Water Quality 1994- 1998.
Founding Chair
American Water Works Association, Research Committee on Membrane Technology, 1988-1992.
Chair
American Water Work Association, Publications Award Committee, 1995-1997.
Panel member
Science panel of the Houston Environmental Foresight Committee, 1995.
Advisor
Terrorist task force for Houston Public Works Department